AzureFile Control

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The AzureFile control provides an easy to use interface to Microsoft's Azure File Storage service.

Syntax

AzureFile

Remarks

The AzureFile control offers an easy-to-use API for the Microsoft Azure File Storage service. Capabilities include uploading and downloading files, strong encryption support, creating folders, file manipulation, and more.

Authentication

Authentication is simple, set the Account property to the name of the Azure Storage account to operate against, and set the AccessKey property to an Azure access key associated with that account.

Addressing Resources

Azure File Storage accounts can contain one or more file shares. Use the ListShares method to list available shares, and select which one the control should operate against using the Share property.

After selecting a share, address the files and folders within it using Linux-style absolute paths. Unless otherwise specified, the control always works in terms of absolute paths, and will always prepend a forward slash (/) to any path passed to it that does not already start with one.

Listing Directory Contents

ListResources lists resources (files and folders) within the specified directory. Calling this method will fire the ResourceList event once for each resource, and will also populate the Resource* properties. // ResourceList event handler. azurefile.OnResourceList += (s, e) => { Console.WriteLine(e.Name); }; azurefile.Share = "myshare"; do { azurefile.ListResources("/work_files/serious_business/cats"); for (int i = 0; i < azurefile.Resources.Count; i++) { // Process resources here. } } while (!string.IsNullOrEmpty(azurefile.ResourceMarker));

Downloading Files

The DownloadFile method downloads files.

If LocalFile is set, the file will be saved to the specified location; otherwise, the file data will be held by ResourceData.

To download and decrypt an encrypted file, set EncryptionAlgorithm and EncryptionPassword before calling this method.

Download Notes

In the simplest use-case, downloading a file looks like this: azurefile.LocalFile = "../MyFile.zip"; azurefile.DownloadFile(azurefile.Resources[0].Path);

Resuming Downloads

The control also supports resuming failed downloads by using the StartByte property. If a download is interrupted, set StartByte to the appropriate offset before calling this method to resume the download. string downloadFile = "../MyFile.zip"; azurefile.LocalFile = downloadFile; azurefile.DownloadFile(azurefile.Resources[0].Path); //The transfer is interrupted and DownloadFile() above fails. Later, resume the download: //Get the size of the partially downloaded file azurefile.StartByte = new FileInfo(downloadFile).Length; azurefile.DownloadFile(azurefile.Resources[0].Path);

Resuming Encrypted File Downloads

Resuming encrypted file downloads is only supported when LocalFile was set in the initial download attempt.

If LocalFile is set when beginning an encrypted download, the control creates a temporary file in TempPath to hold the encrypted data until the download is complete. If the download is interrupted, DownloadTempFile will be populated with the path of the temporary file that holds the partial data.

To resume, DownloadTempFile must be populated, along with StartByte, to allow the remainder of the encrypted data to be downloaded. Once the encrypted data is downloaded it will be decrypted and written to LocalFile. azurefile.LocalFile = "../MyFile.zip"; azurefile.EncryptionPassword = "password"; azurefile.DownloadFile(azurefile.Resources[0].Path); //The transfer is interrupted and DownloadFile() above fails. Later, resume the download: //Get the size of the partially download temp file azurefile.StartByte = new FileInfo(azurefile.Config("DownloadTempFile")).Length; azurefile.DownloadFile(azurefile.Resources[0].Path);

Uploading Files

The UploadFile method uploads new files.

If LocalFile is set the file will be uploaded from the specified path. If LocalFile is not set the data in ResourceData will be used.

To encrypt the file before uploading it, set EncryptionAlgorithm and EncryptionPassword.

Upload Notes

The UploadFile method is a convenience method that performs a resumable file upload. When called, the control first uses CreateFile to initialize a new file entry on the server; and then it fragments the file data into smaller pieces and calls PutRange multiple times in succession to upload those fragments. The fragment size is fixed at 4MB (this is a server limitation that cannot be changed).

During the upload, the FragmentComplete event fires after each fragment is uploaded to indicate overall progress. The control also updates StartByte as necessary to indicate the current offset in the file.

If the upload is interrupted for any reason, resuming it is easy. First, verify that StartByte is populated (if the same instance of the control is used, they should already be populated, and no special action should be needed). Then call UploadFile again to resume the upload at the specified StartByte offset. azurefile.LocalFile = "../MyFile.zip"; azurefile.UploadFile("MyFile.zip"); //The transfer is interrupted and UploadFile() above fails. Later, resume the download. //Using the same instance StartByte is already populated from the previous upload attempt. azurefile.UploadFile("MyFile.zip");

Additional Functionality

The AzureFile control offers advanced functionality beyond simple uploads and downloads. For instance:

• Encrypt and decrypt files using the EncryptionAlgorithm and EncryptionPassword properties.
• Basic file and folder manipulation and organization using methods such as CreateFolder, CopyFile, DeleteFolder, and DeleteFile.
• Advanced file manipulation with CreateFile, ResizeFile, PutRange, GetRanges, and ClearRange.
• Share manipulation with CreateShare, SetShareQuota, and DeleteShare.
• Retrieval of information and metadata for files, folders, and shares using GetFileInfo, GetFolderInfo, and GetShareInfo.
• And more!

Property List

The following is the full list of the properties of the control with short descriptions. Click on the links for further details.

Method List

The following is the full list of the methods of the control with short descriptions. Click on the links for further details.

Event List

The following is the full list of the events fired by the control with short descriptions. Click on the links for further details.

Config Settings

The following is a list of config settings for the control with short descriptions. Click on the links for further details.

AccessKey Property (AzureFile Control)

The Azure access key to use for authentication.

Syntax

azurefilecontrol.AccessKey[=string]

Default Value

""

Remarks

This property specifies the Azure access key that should be used for authentication. It must be set before attempting any operations which connect to the server.

Both primary and secondary access keys are valid.

This property is not available at design time.

Data Type

String

Account Property (AzureFile Control)

The Azure storage account name.

Syntax

azurefilecontrol.Account[=string]

Default Value

""

Remarks

This property specifies the name of the Azure storage account to operate against. It must be set before attempting any operations which connect to the server.

This property is not available at design time.

Data Type

String

EncryptionAlgorithm Property (AzureFile Control)

The encryption algorithm.

Syntax

azurefilecontrol.EncryptionAlgorithm[=integer]

Possible Values

eaAES(0), 
eaBlowfish(1), 
eaCAST(2), 
eaDES(3), 
eaIDEA(4), 
eaRC2(5), 
eaRC4(6), 
eaTEA(7), 
eaTripleDES(8), 
eaTwofish(9), 
eaRijndael(10), 
eaChaCha(11), 
eaXSalsa20(12)

Default Value

0

Remarks

This property specifies the encryption algorithm to be used. The maximum allowable key size is automatically used for the selected algorithm. Possible values are:

Data Type

Integer

EncryptionPassword Property (AzureFile Control)

The encryption password.

Syntax

azurefilecontrol.EncryptionPassword[=string]

Default Value

""

Remarks

If this property is populated when UploadFile or DownloadFile is called, the control will attempt to encrypt or decrypt the data before uploading or after downloading it.

The control uses the value specified here to generate the necessary encryption Key and IV values using the PKCS5 password digest algorithm. This provides a simpler alternative to creating and managing Key and IV values directly.

However, it is also possible to explicitly specify the Key and IV values to use by setting the EncryptionKey and EncryptionIV configuration settings. This may be necessary if, e.g., the data needs to be encrypted/decrypted by another utility which generates Key and IV values differently.

This property is not available at design time.

Data Type

String

FirewallAutoDetect Property (AzureFile Control)

This property tells the control whether or not to automatically detect and use firewall system settings, if available.

Syntax

azurefilecontrol.FirewallAutoDetect[=boolean]

Default Value

False

Remarks

This property tells the control whether or not to automatically detect and use firewall system settings, if available.

Data Type

Boolean

FirewallType Property (AzureFile Control)

This property determines the type of firewall to connect through.

Syntax

azurefilecontrol.FirewallType[=integer]

Possible Values

fwNone(0), 
fwTunnel(1), 
fwSOCKS4(2), 
fwSOCKS5(3), 
fwSOCKS4A(10)

Default Value

0

Remarks

This property determines the type of firewall to connect through. The applicable values are as follows:

Data Type

Integer

FirewallHost Property (AzureFile Control)

This property contains the name or IP address of firewall (optional).

Syntax

azurefilecontrol.FirewallHost[=string]

Default Value

""

Remarks

This property contains the name or IP address of firewall (optional). If a FirewallHost is given, the requested connections will be authenticated through the specified firewall when connecting.

If this property is set to a Domain Name, a DNS request is initiated. Upon successful termination of the request, this property is set to the corresponding address. If the search is not successful, the control fails with an error.

Data Type

String

FirewallPassword Property (AzureFile Control)

This property contains a password if authentication is to be used when connecting through the firewall.

Syntax

azurefilecontrol.FirewallPassword[=string]

Default Value

""

Remarks

This property contains a password if authentication is to be used when connecting through the firewall. If FirewallHost is specified, the FirewallUser and FirewallPassword properties are used to connect and authenticate to the given firewall. If the authentication fails, the control fails with an error.

Data Type

String

FirewallPort Property (AzureFile Control)

This property contains the transmission control protocol (TCP) port for the firewall Host .

Syntax

azurefilecontrol.FirewallPort[=integer]

Default Value

0

Remarks

This property contains the transmission control protocol (TCP) port for the firewall FirewallHost. See the description of the FirewallHost property for details.

Note: This property is set automatically when FirewallType is set to a valid value. See the description of the FirewallType property for details.

Data Type

Integer

FirewallUser Property (AzureFile Control)

This property contains a user name if authentication is to be used connecting through a firewall.

Syntax

azurefilecontrol.FirewallUser[=string]

Default Value

""

Remarks

This property contains a user name if authentication is to be used connecting through a firewall. If the FirewallHost is specified, this property and FirewallPassword properties are used to connect and authenticate to the given Firewall. If the authentication fails, the control fails with an error.

Data Type

String

Idle Property (AzureFile Control)

The current status of the control.

Syntax

azurefilecontrol.Idle

Default Value

True

Remarks

Idle will be False if the component is currently busy (communicating and/or waiting for an answer), and True at all other times.

This property is read-only.

Data Type

Boolean

LocalFile Property (AzureFile Control)

The location of the local file.

Syntax

azurefilecontrol.LocalFile[=string]

Default Value

""

Remarks

This property specifies the location of a file on disk. This is used as the source file when calling UploadFile or PutRange, and as the destination file when calling DownloadFile.

Data Type

String

LocalHost Property (AzureFile Control)

The name of the local host or user-assigned IP interface through which connections are initiated or accepted.

Syntax

azurefilecontrol.LocalHost[=string]

Default Value

""

Remarks

The LocalHost property contains the name of the local host as obtained by the gethostname() system call, or if the user has assigned an IP address, the value of that address.

In multi-homed hosts (machines with more than one IP interface) setting LocalHost to the value of an interface will make the control initiate connections (or accept in the case of server controls) only through that interface.

If the control is connected, the LocalHost property shows the IP address of the interface through which the connection is made in internet dotted format (aaa.bbb.ccc.ddd). In most cases, this is the address of the local host, except for multi-homed hosts (machines with more than one IP interface).

NOTE: LocalHost is not persistent. You must always set it in code, and never in the property window.

Data Type

String

MetadataCount Property (AzureFile Control)

The number of records in the Metadata arrays.

Syntax

azurefilecontrol.MetadataCount[=integer]

Default Value

0

Remarks

This property controls the size of the following arrays:

• MetadataName
• MetadataValue

The array indices start at 0 and end at MetadataCount - 1.

This property is not available at design time.

Data Type

Integer

MetadataName Property (AzureFile Control)

The name of the metadata item.

Syntax

azurefilecontrol.MetadataName(MetadataIndex)[=string]

Default Value

""

Remarks

The name of the metadata item.

This property specifies the name of the metadata item. Note that metadata item names are case-preserving, but not case-sensitive.

Note that the control will automatically prepend x-ms-meta- to this value when submitting metadata items to the server; and will automatically strip that prefix from this value when retrieving them from the server.

The MetadataIndex parameter specifies the index of the item in the array. The size of the array is controlled by the MetadataCount property.

This property is not available at design time.

Data Type

String

MetadataValue Property (AzureFile Control)

The value of the metadata item.

Syntax

azurefilecontrol.MetadataValue(MetadataIndex)[=string]

Default Value

""

Remarks

The value of the metadata item.

This property specifies the value of the metadata item.

The MetadataIndex parameter specifies the index of the item in the array. The size of the array is controlled by the MetadataCount property.

This property is not available at design time.

Data Type

String

OtherHeaders Property (AzureFile Control)

This property includes other headers as determined by the user (optional).

Syntax

azurefilecontrol.OtherHeaders[=string]

Default Value

""

Remarks

This property can be set to a string of headers to be appended to the HTTP request headers created from other properties like ContentType and From.

The headers must follow the format Header: Value as described in the HTTP specifications. Header lines should be separated by CRLF (Chr$(13) & Chr$(10)) .

Use this property with caution. If this property contains invalid headers, HTTP requests may fail.

This property is useful for extending the functionality of the control beyond what is provided.

This property is not available at design time.

Data Type

String

Overwrite Property (AzureFile Control)

Determines if local files are overwritten.

Syntax

azurefilecontrol.Overwrite[=boolean]

Default Value

False

Remarks

This property controls whether local files are overwritten when calling DownloadFile. It is only applicable to local files. The default value is .

Data Type

Boolean

ParsedHeaderCount Property (AzureFile Control)

The number of records in the ParsedHeader arrays.

Syntax

azurefilecontrol.ParsedHeaderCount

Default Value

0

Remarks

This property controls the size of the following arrays:

• ParsedHeaderField
• ParsedHeaderValue

The array indices start at 0 and end at ParsedHeaderCount - 1.

This property is read-only and not available at design time.

Data Type

Integer

ParsedHeaderField Property (AzureFile Control)

This property contains the name of the HTTP header (this is the same case as it is delivered).

Syntax

azurefilecontrol.ParsedHeaderField(ParsedHeaderIndex)

Default Value

""

Remarks

This property contains the name of the HTTP Header (this is the same case as it is delivered).

The ParsedHeaderIndex parameter specifies the index of the item in the array. The size of the array is controlled by the ParsedHeaderCount property.

This property is read-only and not available at design time.

Data Type

String

ParsedHeaderValue Property (AzureFile Control)

This property contains the header contents.

Syntax

azurefilecontrol.ParsedHeaderValue(ParsedHeaderIndex)

Default Value

""

Remarks

This property contains the Header contents.

The ParsedHeaderIndex parameter specifies the index of the item in the array. The size of the array is controlled by the ParsedHeaderCount property.

This property is read-only and not available at design time.

Data Type

String

Prefix Property (AzureFile Control)

A prefix used to restrict the results returned when listing resources or shares.

Syntax

azurefilecontrol.Prefix[=string]

Default Value

""

Remarks

This property, if non-empty, is used to restrict the results returned by ListResources or ListShares to only the items whose names begin with the given value.

This property is not available at design time.

Data Type

String

ProxyAuthScheme Property (AzureFile Control)

This property is used to tell the control which type of authorization to perform when connecting to the proxy.

Syntax

azurefilecontrol.ProxyAuthScheme[=integer]

Possible Values

authBasic(0), 
authDigest(1), 
authProprietary(2), 
authNone(3), 
authNtlm(4), 
authNegotiate(5)

Default Value

0

Remarks

This property is used to tell the control which type of authorization to perform when connecting to the proxy. This is used only when the ProxyUser and ProxyPassword properties are set.

ProxyAuthScheme should be set to authNone (3) when no authentication is expected.

By default, ProxyAuthScheme is authBasic (0), and if the ProxyUser and ProxyPassword properties are set, the component will attempt basic authentication.

If ProxyAuthScheme is set to authDigest (1), digest authentication will be attempted instead.

If ProxyAuthScheme is set to authProprietary (2), then the authorization token will not be generated by the control. Look at the configuration file for the control being used to find more information about manually setting this token.

If ProxyAuthScheme is set to authNtlm (4), NTLM authentication will be used.

For security reasons, setting this property will clear the values of ProxyUser and ProxyPassword.

Data Type

Integer

ProxyAutoDetect Property (AzureFile Control)

This property tells the control whether or not to automatically detect and use proxy system settings, if available.

Syntax

azurefilecontrol.ProxyAutoDetect[=boolean]

Default Value

False

Remarks

This property tells the control whether or not to automatically detect and use proxy system settings, if available. The default value is .

Data Type

Boolean

ProxyPassword Property (AzureFile Control)

This property contains a password if authentication is to be used for the proxy.

Syntax

azurefilecontrol.ProxyPassword[=string]

Default Value

""

Remarks

This property contains a password if authentication is to be used for the proxy.

If ProxyAuthScheme is set to Basic Authentication, the ProxyUser and ProxyPassword are Base64 encoded and the proxy authentication token will be generated in the form Basic [encoded-user-password].

If ProxyAuthScheme is set to Digest Authentication, the ProxyUser and ProxyPassword properties are used to respond to the Digest Authentication challenge from the server.

If ProxyAuthScheme is set to NTLM Authentication, the ProxyUser and ProxyPassword properties are used to authenticate through NTLM negotiation.

Data Type

String

ProxyPort Property (AzureFile Control)

This property contains the Transmission Control Protocol (TCP) port for the proxy Server (default 80).

Syntax

azurefilecontrol.ProxyPort[=integer]

Default Value

80

Remarks

This property contains the Transmission Control Protocol (TCP) port for the proxy ProxyServer (default 80). See the description of the ProxyServer property for details.

Data Type

Integer

ProxyServer Property (AzureFile Control)

If a proxy Server is given, then the HTTP request is sent to the proxy instead of the server otherwise specified.

Syntax

azurefilecontrol.ProxyServer[=string]

Default Value

""

Remarks

If a proxy ProxyServer is given, then the HTTP request is sent to the proxy instead of the server otherwise specified.

If the ProxyServer property is set to a domain name, a DNS request is initiated. Upon successful termination of the request, the ProxyServer property is set to the corresponding address. If the search is not successful, an error is returned.

Data Type

String

ProxySSL Property (AzureFile Control)

This property determines when to use a Secure Sockets Layer (SSL) for the connection to the proxy.

Syntax

azurefilecontrol.ProxySSL[=integer]

Possible Values

psAutomatic(0), 
psAlways(1), 
psNever(2), 
psTunnel(3)

Default Value

0

Remarks

This property determines when to use a Secure Sockets Layer (SSL) for the connection to the proxy. The applicable values are as follows:

Data Type

Integer

ProxyUser Property (AzureFile Control)

This property contains a username if authentication is to be used for the proxy.

Syntax

azurefilecontrol.ProxyUser[=string]

Default Value

""

Remarks

This property contains a username if authentication is to be used for the proxy.

If ProxyAuthScheme is set to Basic Authentication, the ProxyUser and ProxyPassword properties are Base64 encoded and the proxy authentication token will be generated in the form Basic [encoded-user-password].

If ProxyAuthScheme is set to Digest Authentication, the ProxyUser and ProxyPassword properties are used to respond to the Digest Authentication challenge from the server.

If ProxyAuthScheme is set to NTLM Authentication, the ProxyUser and ProxyPassword properties are used to authenticate through NTLM negotiation.

Data Type

String

QueryParamCount Property (AzureFile Control)

The number of records in the QueryParam arrays.

Syntax

azurefilecontrol.QueryParamCount[=integer]

Default Value

0

Remarks

This property controls the size of the following arrays:

• QueryParamName
• QueryParamValue

The array indices start at 0 and end at QueryParamCount - 1.

This property is not available at design time.

Data Type

Integer

QueryParamName Property (AzureFile Control)

The name of the query parameter.

Syntax

azurefilecontrol.QueryParamName(QueryParamIndex)[=string]

Default Value

""

Remarks

The name of the query parameter.

This property specifies the name of the query parameter.

The QueryParamIndex parameter specifies the index of the item in the array. The size of the array is controlled by the QueryParamCount property.

This property is not available at design time.

Data Type

String

QueryParamValue Property (AzureFile Control)

The value of the query parameter.

Syntax

azurefilecontrol.QueryParamValue(QueryParamIndex)[=string]

Default Value

""

Remarks

The value of the query parameter.

This property specifies the value of the query parameter. The control will automatically URL-encode this value when sending the request.

The QueryParamIndex parameter specifies the index of the item in the array. The size of the array is controlled by the QueryParamCount property.

This property is not available at design time.

Data Type

String

RangeCount Property (AzureFile Control)

The number of records in the Range arrays.

Syntax

azurefilecontrol.RangeCount

Default Value

0

Remarks

This property controls the size of the following arrays:

• RangeFirst
• RangeLast

The array indices start at 0 and end at RangeCount - 1.

This property is read-only and not available at design time.

Data Type

Integer

RangeFirst Property (AzureFile Control)

The first byte of the range.

Syntax

azurefilecontrol.RangeFirst(RangeIndex)

Default Value

0

Remarks

The first byte of the range.

This property specifies the first byte (inclusive) of the byte range.

The RangeIndex parameter specifies the index of the item in the array. The size of the array is controlled by the RangeCount property.

This property is read-only and not available at design time.

Data Type

Long64

RangeLast Property (AzureFile Control)

The last byte of the range.

Syntax

azurefilecontrol.RangeLast(RangeIndex)

Default Value

0

Remarks

The last byte of the range.

This property specifies the last byte (inclusive) of the byte range.

The RangeIndex parameter specifies the index of the item in the array. The size of the array is controlled by the RangeCount property.

This property is read-only and not available at design time.

Data Type

Long64

ResourceData Property (AzureFile Control)

The data that was downloaded, or that should be uploaded.

Syntax

azurefilecontrol.ResourceData[=string]

Default Value

""

Remarks

This property is populated with file data after calling DownloadFile if LocalFile is not set.

This property can also be set before calling UploadFile; its data will be uploaded if LocalFile is not set.

To read or write binary data to the property, a Variant (Byte Array) version is provided in .ResourceDataB.

This property is not available at design time.

Data Type

Binary String

ResourceMarker Property (AzureFile Control)

A marker indicating what page of resources to return next.

Syntax

azurefilecontrol.ResourceMarker[=string]

Default Value

""

Remarks

This property will be populated when ListResources is called if the results are paged and there are more pages. To list all resources, continue to call ListResources until this property returns empty string.

Refer to ListResources for more information.

This property is not available at design time.

Data Type

String

ResourceCount Property (AzureFile Control)

The number of records in the Resource arrays.

Syntax

azurefilecontrol.ResourceCount

Default Value

0

Remarks

This property controls the size of the following arrays:

• ResourceContentMD5
• ResourceContentType
• ResourceETag
• ResourceModifiedTime
• ResourceName
• ResourcePath
• ResourceShare
• ResourceSize
• ResourceType

The array indices start at 0 and end at ResourceCount - 1.

This property is read-only and not available at design time.

Data Type

Integer

ResourceContentMD5 Property (AzureFile Control)

An MD5 hash of the file's content.

Syntax

azurefilecontrol.ResourceContentMD5(ResourceIndex)

Default Value

""

Remarks

An MD5 hash of the file's content.

This property reflects the MD5 hash of the file's content, if one is returned by the server. Always empty for folders.

The ResourceIndex parameter specifies the index of the item in the array. The size of the array is controlled by the ResourceCount property.

This property is read-only and not available at design time.

Data Type

String

ResourceContentType Property (AzureFile Control)

The content type of the resource.

Syntax

azurefilecontrol.ResourceContentType(ResourceIndex)

Default Value

""

Remarks

The content type of the resource.

This property reflects the content type of the resource.

The ResourceIndex parameter specifies the index of the item in the array. The size of the array is controlled by the ResourceCount property.

This property is read-only and not available at design time.

Data Type

String

ResourceETag Property (AzureFile Control)

The ETag of the resource.

Syntax

azurefilecontrol.ResourceETag(ResourceIndex)

Default Value

""

Remarks

The ETag of the resource.

This property reflects the ETag of the resource.

The ResourceIndex parameter specifies the index of the item in the array. The size of the array is controlled by the ResourceCount property.

This property is read-only and not available at design time.

Data Type

String

ResourceModifiedTime Property (AzureFile Control)

The last modified time of the resource.

Syntax

azurefilecontrol.ResourceModifiedTime(ResourceIndex)

Default Value

""

Remarks

The last modified time of the resource.

This property reflects the last modified time of the resource, formatted according to RFC 1233.

The ResourceIndex parameter specifies the index of the item in the array. The size of the array is controlled by the ResourceCount property.

This property is read-only and not available at design time.

Data Type

String

ResourceName Property (AzureFile Control)

The name of the resource.

Syntax

azurefilecontrol.ResourceName(ResourceIndex)

Default Value

""

Remarks

The name of the resource.

This property reflects the name of the resource.

The ResourceIndex parameter specifies the index of the item in the array. The size of the array is controlled by the ResourceCount property.

This property is read-only and not available at design time.

Data Type

String

ResourcePath Property (AzureFile Control)

The path of the resource.

Syntax

azurefilecontrol.ResourcePath(ResourceIndex)

Default Value

""

Remarks

The path of the resource.

This property reflects the path of the resource (not including the name of the share it resides in; see ResourceShare).

The ResourceIndex parameter specifies the index of the item in the array. The size of the array is controlled by the ResourceCount property.

This property is read-only and not available at design time.

Data Type

String

ResourceShare Property (AzureFile Control)

The name of the share the resource resides in.

Syntax

azurefilecontrol.ResourceShare(ResourceIndex)

Default Value

""

Remarks

The name of the share the resource resides in.

This property reflects the name of the share the resource resides in.

The ResourceIndex parameter specifies the index of the item in the array. The size of the array is controlled by the ResourceCount property.

This property is read-only and not available at design time.

Data Type

String

ResourceSize Property (AzureFile Control)

The size of the file.

Syntax

azurefilecontrol.ResourceSize(ResourceIndex)

Default Value

0

Remarks

The size of the file.

This property reflects the size, in bytes, of the file resource. Always 0 for folders.

The ResourceIndex parameter specifies the index of the item in the array. The size of the array is controlled by the ResourceCount property.

This property is read-only and not available at design time.

Data Type

Long64

ResourceType Property (AzureFile Control)

The resource's type.

Syntax

azurefilecontrol.ResourceType(ResourceIndex)

Possible Values

afrtFile(0), 
afrtFolder(1)

Default Value

0

Remarks

The resource's type.

This property indicates whether the resource is a folder or a file. Possible values are:

The ResourceIndex parameter specifies the index of the item in the array. The size of the array is controlled by the ResourceCount property.

This property is read-only and not available at design time.

Data Type

Integer

Share Property (AzureFile Control)

Selects a share.

Syntax

azurefilecontrol.Share[=string]

Default Value

""

Remarks

This property selects a share, by name, for the control to operate against. It must be set before attempting most operations.

Share Name Rules

Share names must adhere to the following rules:

• Must be 3 to 63 characters long.
• Must start with a letter or number; and may only contain letters, numbers, and hyphens.
• All letters much be lowercase. (For convenience, the control will automatically lowercase all letters in any value assigned to Share.)
• All hyphens must be immediately preceded and followed by a letter or number (consecutive hyphens are not allowed).

This property is not available at design time.

Data Type

String

ShareMarker Property (AzureFile Control)

A marker indicating what page of shares to return next.

Syntax

azurefilecontrol.ShareMarker[=string]

Default Value

""

Remarks

This property will be populated when ListShares is called if the results are paged and there are more pages. To list all shares, continue to call ListShares until this property returns empty string.

Refer to ListShares for more information.

This property is not available at design time.

Data Type

String

ShareCount Property (AzureFile Control)

The number of records in the Share arrays.

Syntax

azurefilecontrol.ShareCount

Default Value

0

Remarks

This property controls the size of the following arrays:

• ShareETag
• ShareModifiedTime
• ShareName
• ShareQuota
• ShareSpaceUsed

The array indices start at 0 and end at ShareCount - 1.

This property is read-only and not available at design time.

Data Type

Integer

ShareETag Property (AzureFile Control)

The ETag of the share.

Syntax

azurefilecontrol.ShareETag(ShareIndex)

Default Value

""

Remarks

The ETag of the share.

This property reflects the ETag of the share.

The ShareIndex parameter specifies the index of the item in the array. The size of the array is controlled by the ShareCount property.

This property is read-only and not available at design time.

Data Type

String

ShareModifiedTime Property (AzureFile Control)

The last modified time of the share.

Syntax

azurefilecontrol.ShareModifiedTime(ShareIndex)

Default Value

""

Remarks

The last modified time of the share.

This property reflects the last modified time of the share, formatted according to RFC 1123.

Note that the share's last modified time is not updated by operations against resources within the share.

The ShareIndex parameter specifies the index of the item in the array. The size of the array is controlled by the ShareCount property.

This property is read-only and not available at design time.

Data Type

String

ShareName Property (AzureFile Control)

The name of the share.

Syntax

azurefilecontrol.ShareName(ShareIndex)

Default Value

""

Remarks

The name of the share.

This property reflects the name of the share.

The ShareIndex parameter specifies the index of the item in the array. The size of the array is controlled by the ShareCount property.

This property is read-only and not available at design time.

Data Type

String

ShareQuota Property (AzureFile Control)

The share's space quota, in GB.

Syntax

azurefilecontrol.ShareQuota(ShareIndex)

Default Value

0

Remarks

The share's space quota, in GB.

This property reflects the space quota, in GB, imposed on the share.

The ShareIndex parameter specifies the index of the item in the array. The size of the array is controlled by the ShareCount property.

This property is read-only and not available at design time.

Data Type

Integer

ShareSpaceUsed Property (AzureFile Control)

The amount of storage space consumed by the share.

Syntax

azurefilecontrol.ShareSpaceUsed(ShareIndex)

Default Value

0

Remarks

The amount of storage space consumed by the share.

This property reflects the approximate amount of storage space, in GB, the share is consuming.

The ShareIndex parameter specifies the index of the item in the array. The size of the array is controlled by the ShareCount property.

This property is read-only and not available at design time.

Data Type

Integer

SSLAcceptServerCertEncoded Property (AzureFile Control)

This is the certificate (PEM/Base64 encoded).

Syntax

azurefilecontrol.SSLAcceptServerCertEncoded[=string]

Default Value

""

Remarks

This is the certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The SSLAcceptServerCertStore and SSLAcceptServerCertSubject properties also may be used to specify a certificate.

When SSLAcceptServerCertEncoded is set, a search is initiated in the current SSLAcceptServerCertStore for the private key of the certificate. If the key is found, SSLAcceptServerCertSubject is updated to reflect the full subject of the selected certificate; otherwise, SSLAcceptServerCertSubject is set to an empty string.

To read or write binary data to the property, a Variant (Byte Array) version is provided in .SSLAcceptServerCertEncodedB.

This property is not available at design time.

Data Type

Binary String

SSLCertEncoded Property (AzureFile Control)

This is the certificate (PEM/Base64 encoded).

Syntax

azurefilecontrol.SSLCertEncoded[=string]

Default Value

""

Remarks

This is the certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The SSLCertStore and SSLCertSubject properties also may be used to specify a certificate.

When SSLCertEncoded is set, a search is initiated in the current SSLCertStore for the private key of the certificate. If the key is found, SSLCertSubject is updated to reflect the full subject of the selected certificate; otherwise, SSLCertSubject is set to an empty string.

To read or write binary data to the property, a Variant (Byte Array) version is provided in .SSLCertEncodedB.

This property is not available at design time.

Data Type

Binary String

SSLCertStore Property (AzureFile Control)

This is the name of the certificate store for the client certificate.

Syntax

azurefilecontrol.SSLCertStore[=string]

Default Value

"MY"

Remarks

This is the name of the certificate store for the client certificate.

The SSLCertStoreType property denotes the type of the certificate store specified by SSLCertStore. If the store is password protected, specify the password in SSLCertStorePassword.

SSLCertStore is used in conjunction with the SSLCertSubject property to specify client certificates. If SSLCertStore has a value, and SSLCertSubject or SSLCertEncoded is set, a search for a certificate is initiated. Please see the SSLCertSubject property for details.

Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:

When the certificate store type is PFXFile, this property must be set to the name of the file. When the type is PFXBlob, the property must be set to the binary contents of a PFX file (i.e., PKCS#12 certificate store).

To read or write binary data to the property, a Variant (Byte Array) version is provided in .SSLCertStoreB.

Data Type

Binary String

SSLCertStorePassword Property (AzureFile Control)

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Syntax

azurefilecontrol.SSLCertStorePassword[=string]

Default Value

""

Remarks

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Data Type

String

SSLCertStoreType Property (AzureFile Control)

This is the type of certificate store for this certificate.

Syntax

azurefilecontrol.SSLCertStoreType[=integer]

Possible Values

cstUser(0), 
cstMachine(1), 
cstPFXFile(2), 
cstPFXBlob(3), 
cstJKSFile(4), 
cstJKSBlob(5), 
cstPEMKeyFile(6), 
cstPEMKeyBlob(7), 
cstPublicKeyFile(8), 
cstPublicKeyBlob(9), 
cstSSHPublicKeyBlob(10), 
cstP7BFile(11), 
cstP7BBlob(12), 
cstSSHPublicKeyFile(13), 
cstPPKFile(14), 
cstPPKBlob(15), 
cstXMLFile(16), 
cstXMLBlob(17), 
cstJWKFile(18), 
cstJWKBlob(19), 
cstSecurityKey(20), 
cstBCFKSFile(21), 
cstBCFKSBlob(22), 
cstPKCS11(23), 
cstAuto(99)

Default Value

0

Remarks

This is the type of certificate store for this certificate.

The control supports both public and private keys in a variety of formats. When the cstAuto value is used, the control will automatically determine the type. This property can take one of the following values:

Data Type

Integer

SSLCertSubject Property (AzureFile Control)

This is the subject of the certificate used for client authentication.

Syntax

azurefilecontrol.SSLCertSubject[=string]

Default Value

""

Remarks

This is the subject of the certificate used for client authentication.

This property must be set after all other certificate properties are set. When this property is set, a search is performed in the current certificate store to locate a certificate with a matching subject.

If a matching certificate is found, the property is set to the full subject of the matching certificate.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks a random certificate in the certificate store.

The certificate subject is a comma-separated list of distinguished name fields and values. For instance, "CN=www.server.com, OU=test, C=US, E=support@nsoftware.com". Common fields and their meanings are as follows:

If a field value contains a comma, it must be quoted.

Data Type

String

SSLProvider Property (AzureFile Control)

This specifies the SSL/TLS implementation to use.

Syntax

azurefilecontrol.SSLProvider[=integer]

Possible Values

sslpAutomatic(0), 
sslpPlatform(1), 
sslpInternal(2)

Default Value

0

Remarks

This property specifies the SSL/TLS implementation to use. In most cases the default value of 0 (Automatic) is recommended and should not be changed. When set to 0 (Automatic) the control will select whether to use the platform implementation or the internal implementation depending on the operating system as well as the TLS version being used.

Possible values are:

In most cases using the default value (Automatic) is recommended. The control will select a provider depending on the current platform.

When Automatic is selected the platform implementation is used by default. When TLS 1.3 is enabled via SSLEnabledProtocols the internal implementation is used.

Data Type

Integer

SSLServerCertEncoded Property (AzureFile Control)

This is the certificate (PEM/Base64 encoded).

Syntax

azurefilecontrol.SSLServerCertEncoded

Default Value

""

Remarks

This is the certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The SSLServerCertStore and SSLServerCertSubject properties also may be used to specify a certificate.

When SSLServerCertEncoded is set, a search is initiated in the current SSLServerCertStore for the private key of the certificate. If the key is found, SSLServerCertSubject is updated to reflect the full subject of the selected certificate; otherwise, SSLServerCertSubject is set to an empty string.

To read or write binary data to the property, a Variant (Byte Array) version is provided in .SSLServerCertEncodedB.

This property is read-only and not available at design time.

Data Type

Binary String

StartByte Property (AzureFile Control)

The byte offset from which to start the upload or download.

Syntax

azurefilecontrol.StartByte[=long64]

Default Value

0

Remarks

This property may be set to resume an upload or download; it specifies the offset in the file from which to resume. See UploadFile and DownloadFile for details about resuming uploads and downloads.

This property is not available at design time.

Data Type

Long64

Timeout Property (AzureFile Control)

A timeout for the control.

Syntax

azurefilecontrol.Timeout[=integer]

Default Value

60

Remarks

If the Timeout property is set to 0, all operations will run uninterrupted until successful completion or an error condition is encountered.

If Timeout is set to a positive value, the control will wait for the operation to complete before returning control.

The control will use DoEvents to enter an efficient wait loop during any potential waiting period, making sure that all system events are processed immediately as they arrive. This ensures that the host application does not "freeze" and remains responsive.

If Timeout expires, and the operation is not yet complete, the control fails with an error.

Please note that by default, all timeouts are inactivity timeouts, i.e. the timeout period is extended by Timeout seconds when any amount of data is successfully sent or received.

The default value for the Timeout property is 60 seconds.

Data Type

Integer

UseSSL Property (AzureFile Control)

Whether to use SSL/TLS when connecting.

Syntax

azurefilecontrol.UseSSL[=boolean]

Default Value

True

Remarks

This property specifies whether the control should use SSL/TLS when connecting.

This property is not available at design time.

Data Type

Boolean

AbortCopy Method (AzureFile Control)

Aborts a copy operation.

Syntax

azurefilecontrol.AbortCopy DestFilePath, CopyId

Remarks

This method aborts the copy operation identified by the given CopyId for the destination file at DestFilePath in the share currently selected by Share.

Note that the destination file will still exist after aborting a copy operation, but it will be empty.

AddMetadata Method (AzureFile Control)

Adds a metadata item to the Metadata properties.

Syntax

azurefilecontrol.AddMetadata Name, Value

Remarks

This method adds a metadata item to the Metadata properties. Name specifies the name of the item, and Value specifies the value of the item.

Note that the control will automatically prepend x-ms-meta- to metadata item names (as necessary) when they are submitted to the server. Also note that while metadata item names are case-preserving, they are not case-sensitive.

AddQueryParam Method (AzureFile Control)

Adds a query parameter to the QueryParams properties.

Syntax

azurefilecontrol.AddQueryParam Name, Value

Remarks

This method is used to add a query parameter to the QueryaParam* properties. Name specifies the name of the parameter, and Value specifies the value of the parameter.

All specified Values will be URL encoded by the control automatically. Consult the service documentation for details on the available parameters.

ClearRange Method (AzureFile Control)

Clears a range of bytes from a file.

Syntax

azurefilecontrol.ClearRange FilePath, First, Last

Remarks

This method clears the range of bytes from First to Last (inclusive) from the file at FilePath in the share currently selected by Share.

The server tracks ranges of file data in 512-byte chunks, aligned to the absolute beginning of the file. When this method is called, the server frees any such chunks that are completely covered by the specified range of bytes ([First]-[Last]), and writes 0s to the appropriate portions of any chunks which are not completely covered by that range.

Freed chunks are not included in the results returned by GetRanges.

Config Method (AzureFile Control)

Sets or retrieves a configuration setting.

Syntax

azurefilecontrol.Config ConfigurationString

Remarks

Config is a generic method available in every control. It is used to set and retrieve configuration settings for the control.

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the control, access to these internal properties is provided through the Config method.

To set a configuration setting named PROPERTY, you must call Config("PROPERTY=VALUE"), where VALUE is the value of the setting expressed as a string. For boolean values, use the strings "True", "False", "0", "1", "Yes", or "No" (case does not matter).

To read (query) the value of a configuration setting, you must call Config("PROPERTY"). The value will be returned as a string.

CopyFile Method (AzureFile Control)

Copies a file.

Syntax

azurefilecontrol.CopyFile FromFilePath, ToFilePath, ToShare

Remarks

This method copies the file at FromFilePath (in the share currently selected by Share) to the path ToFilePath in the share ToShare. If this method finishes successfully, it will either return an asynchronous copy operation Id, or an empty string (if the copy has finished already).

If ToShare is empty, the current value of Share will be used instead. If ToShare is non-empty, the value will automatically be lowercased when preparing the request.

Any parent folders included in ToFilePath must already exist.

If the destination file already exists, it will be overwritten.

As long as the server doesn't return an error, this method will always populate the CopyId and CopyStatus configuration settings (and clear CopyProgress and CopyStatusDesc).

Asynchronous Copy Notes

As mentioned, this method will return a copy operation Id if the copy operation was started asynchronously. In this case, use the GetFileInfo method to poll the destination file's information, which will cause the CopyStatus, CopyStatusDesc, and CopyProgress configuration settings to be refreshed.

A copy operation whose CopyStatus is still pending may also be aborted by passing the copy operation Id returned by this method (or later retrieved from CopyId) to the AbortCopy method. // Copy a file to another location within the same share. string copyResult = azurefile.CopyFile("/folder1/important.zip", "/folder2/secrets.zip", ""); // If the returned value *isn't* empty string, then we'll monitor the status of the // asynchronous copy operation by polling once every 2 seconds using GetFileInfo(). if (!string.IsNullOrEmpty(copyResult)) { do { azurefile.GetFileInfo("/folder2/secrets.zip"); Console.WriteLine("Copy progress: " + azurefile.Config("CopyProgress")); } while (azurefile.Config("CopyStatus") == "pending"); }

CreateFile Method (AzureFile Control)

Initializes a new file.

Syntax

azurefilecontrol.CreateFile NewFilePath, FileLength

Remarks

This method initializes a new file with a given FileLength (in bytes) at the specified NewFilePath in the share currently selected by Share. The path of the newly-initialized file is returned.

Any parent folders included in NewFilePath must already exist.

If the SendMetadata configuration setting is enabled when this method is called, all items in the Metadata* properties will be sent along with the creation request.

Note: This method is typically only useful for advanced use-cases. To upload a file, just call UploadFile.

Usage Notes

This method does not upload or otherwise allocate any data, it just creates the file entry and "reserves" storage space for it. After a file has been created with this method, the following methods can be used to manipulate its data:

• The PutRange method can be used to upload ranges of data (up to 4MB at once) to the file.
• The ClearRange method can be used to clear an arbitrary range of data from the file, allowing the server to release the associated storage resources.
• The GetRanges method can be used to obtain a list of all data ranges present in the file.

CreateFolder Method (AzureFile Control)

Creates a new folder.

Syntax

azurefilecontrol.CreateFolder NewFolderPath

Remarks

This method creates a new folder at the specified NewFolderPath in the share currently selected by Share. The path of the newly-created folder is returned.

Any parent folders included in NewFolderPath must already exist.

If the SendMetadata configuration setting is enabled when this method is called, all items in the Metadata* properties will be sent along with the creation request.

CreateShare Method (AzureFile Control)

Creates a new share.

Syntax

azurefilecontrol.CreateShare 

Remarks

This method creates a new share using the name specified by the Share property.

If the CreateShareQuota configuration setting is a positive, non-zero integer when this method is called, the share will be created with a space quota of that many GB. A share's space quota may be changed at any time using the SetShareQuota method.

If the SendMetadata configuration setting is enabled when this method is called, all items in the Metadata* properties will be sent along with the creation request.

Share Name Rules

Share names must adhere to the following rules:

• Must be 3 to 63 characters long.
• Must start with a letter or number; and may only contain letters, numbers, and hyphens.
• All letters much be lowercase. (For convenience, the control will automatically lowercase all letters in any value assigned to Share.)
• All hyphens must be immediately preceded and followed by a letter or number (consecutive hyphens are not allowed).

DeleteFile Method (AzureFile Control)

Deletes a file.

Syntax

azurefilecontrol.DeleteFile FilePath

Remarks

This method deletes the file at the specified FilePath in the share currently selected by Share.

DeleteFolder Method (AzureFile Control)

Deletes a folder.

Syntax

azurefilecontrol.DeleteFolder FolderPath

Remarks

This method deletes the folder at the specified FolderPath in the share currently selected by Share.

Only empty folders may be deleted; non-empty folders must be emptied first.

DeleteShare Method (AzureFile Control)

Deletes a share.

Syntax

azurefilecontrol.DeleteShare 

Remarks

This method deletes the share currently selected by the Share property.

If the currently selected Share has any snapshots associated with it, and the DeleteShareSnapshots configuration setting is disabled (default) when this method is called, the server will return an error. Shares with snapshots can only be deleted after enabling DeleteShareSnapshots.

Note that, according to the Azure File Storage documentation, a share's name cannot be reused until at least 30 seconds after its deletion.

DownloadFile Method (AzureFile Control)

Downloads a file.

Syntax

azurefilecontrol.DownloadFile FilePath

Remarks

This method downloads the file at the specified FilePath in the share currently selected by Share.

If LocalFile is set, the file will be saved to the specified location; otherwise, the file data will be held by ResourceData.

To download and decrypt an encrypted file, set EncryptionAlgorithm and EncryptionPassword before calling this method.

Download Notes

In the simplest use-case, downloading a file looks like this: azurefile.LocalFile = "../MyFile.zip"; azurefile.DownloadFile(azurefile.Resources[0].Path);

Resuming Downloads

The control also supports resuming failed downloads by using the StartByte property. If a download is interrupted, set StartByte to the appropriate offset before calling this method to resume the download. string downloadFile = "../MyFile.zip"; azurefile.LocalFile = downloadFile; azurefile.DownloadFile(azurefile.Resources[0].Path); //The transfer is interrupted and DownloadFile() above fails. Later, resume the download: //Get the size of the partially downloaded file azurefile.StartByte = new FileInfo(downloadFile).Length; azurefile.DownloadFile(azurefile.Resources[0].Path);

Resuming Encrypted File Downloads

Resuming encrypted file downloads is only supported when LocalFile was set in the initial download attempt.

If LocalFile is set when beginning an encrypted download, the control creates a temporary file in TempPath to hold the encrypted data until the download is complete. If the download is interrupted, DownloadTempFile will be populated with the path of the temporary file that holds the partial data.

To resume, DownloadTempFile must be populated, along with StartByte, to allow the remainder of the encrypted data to be downloaded. Once the encrypted data is downloaded it will be decrypted and written to LocalFile. azurefile.LocalFile = "../MyFile.zip"; azurefile.EncryptionPassword = "password"; azurefile.DownloadFile(azurefile.Resources[0].Path); //The transfer is interrupted and DownloadFile() above fails. Later, resume the download: //Get the size of the partially download temp file azurefile.StartByte = new FileInfo(azurefile.Config("DownloadTempFile")).Length; azurefile.DownloadFile(azurefile.Resources[0].Path);

GetFileInfo Method (AzureFile Control)

Gets a file's information and metadata.

Syntax

azurefilecontrol.GetFileInfo FilePath

Remarks

This method gets information and metadata for the file at the specified FilePath in the share currently selected by Share.

Calling this method will fire the ResourceList event, will re-populate the Resource* properties with a single item, and will re-populate the Metadata* properties with any metadata currently associated with the file.

GetFolderInfo Method (AzureFile Control)

Gets a folder's information and metadata.

Syntax

azurefilecontrol.GetFolderInfo FolderPath

Remarks

This method gets information and metadata for the folder at the specified FolderPath in the share currently selected by Share.

FolderPath can be empty string to get information about the root folder of the share.

Calling this method will fire the ResourceList event, will re-populate the Resource* properties with a single item, and will re-populate the Metadata* properties with any metadata currently associated with the folder.

GetLink Method (AzureFile Control)

Creates a link that provides access to a share or file.

Syntax

azurefilecontrol.GetLink FilePath, Permissions, StartTime, ExpiryTime

Remarks

This method creates and returns a shared access signature (SAS), which is a link that provides access to a specific share or file. The following table indicates which inputs must be provided to produce a link of the desired type:

Permissions specifies what permissions the SAS grants, in the form of an abbreviated permissions list. Refer to this section of Azure's "Create a Service SAS" article for more information about how to format this value.

StartTime and ExpiryTime specify the UTC start and end times of the SAS's validity interval. Refer to this section of Azure's "Create a Service SAS" article for more information about how to format these values.

StartTime may be empty, in which case the server will assume that the link is valid immediately. Permissions and ExpiryTime must both be non-empty, unless an si query parameter that references a stored access policy (which has corresponding non-empty values) is present in the QueryParam* properties.

If any of the query parameters listed below are present in the QueryParam* properties when this method is called, they will be included when creating the SAS. All other application-specified query parameters are ignored.

• Response headers: rscc, rscd, rsce, rscl, rsct
• IP address (single or range): sip
• Allowed HTTP protocol(s): spr
• Stored access policy ("signed identifier"): si

For more information about SAS links, refer to Azure's Create a Service SAS article.

GetRanges Method (AzureFile Control)

Gets the list of allocated data ranges in a file.

Syntax

azurefilecontrol.GetRanges FilePath

Remarks

This method gets the list of allocated data ranges in the file at the specified FilePath in the share currently selected by Share and populates the Range* properties with the results.

The server tracks ranges of file data in 512-byte chunks, aligned to the absolute beginning of the file; thus, the size of every range returned by this method will always be a multiple of 512. Chunks that are not currently allocated (either because no data has been written to them, or because they've been freed with ClearRange) will not be returned by this method.

GetShareInfo Method (AzureFile Control)

Gets a share's information and metadata.

Syntax

azurefilecontrol.GetShareInfo 

Remarks

This method gets information and metadata for the share currently selected by the Share property.

Calling this method will fire the ShareList event, will re-populate the Share* properties with a single item, and will re-populate the Metadata* properties with any metadata currently associated with the share.

Interrupt Method (AzureFile Control)

Interrupt the current method.

Syntax

azurefilecontrol.Interrupt 

Remarks

If there is no method in progress, Interrupt simply returns, doing nothing.

ListResources Method (AzureFile Control)

Lists resources in a given folder.

Syntax

azurefilecontrol.ListResources FolderPath

Remarks

This method lists the resources in the folder at the specified FolderPath in the share currently selected by Share.

Before calling this method, the Prefix property may be set in order to restrict the results to only the items whose names begin with a given string. The MaxResults configuration setting may also be used to limit the number of results returned.

Calling this method will fire the ResourceList event once for each resource, and will also populate the Resource* properties.

If there are still more resources available to list when this method returns, the ResourceMarker property will be populated. Continue to call this method until ResourceMarker is empty to accumulate all pages of results in the Resource* properties.

Note that the server only returns the following resource properties when listing resources (use GetFileInfo or GetFolderInfo to retrieve all properties for a specific resource):

• ResourceName
• ResourcePath (populated by the control automatically)
• ResourceShare (populated by the control automatically)
• ResourceSize
• ResourceType

ListShares Method (AzureFile Control)

Lists shares in the file storage account.

Syntax

azurefilecontrol.ListShares 

Remarks

This method lists the shares in the file storage account specified by the Account property.

Before calling this method, the Prefix property may be set in order to restrict the results to only the items whose names begin with a given string. The MaxResults configuration setting may also be used to limit the number of results returned.

Calling this method will fire the ShareList event once for each share, and will also populate the Share* properties.

If there are still more shares available to list when this method returns, the ShareMarker property will be populated. Continue to call this method until ShareMarker is empty to accumulate all pages of results in the Share* properties.

Note that the server does not return the shares' ShareSpaceUsed property when listing shares; use GetShareInfo to retrieve all properties for a specific share. // ShareList event handler. azurefile.OnShareList += (s, e) => { Console.WriteLine(e.Name); }; do { azurefile.ListShares(); for (int i = 0; i < azurefile.Shares.Count; i++) { // Process shares here. } } while (!string.IsNullOrEmpty(azurefile.ShareMarker));

PutRange Method (AzureFile Control)

Uploads a range of data to a file.

Syntax

azurefilecontrol.PutRange FilePath, WriteOffset

Remarks

This method uploads a range of data to the file at the specified FilePath in the share currently selected by Share. The data to upload cannot be larger than 4MB (4194304 bytes), and is written to the file at the given WriteOffset (specified in bytes).

The server tracks ranges of file data in 512-byte chunks, aligned to the absolute beginning of the file. However, neither the WriteOffset nor the length of the data to upload need be a multiple of 512. Any portions of a chunk not written to will be populated with 0s.

Note that, according to the Azure File Storage documentation, this operation requires a write lock on the entire file in order to complete successfully.

Reset Method (AzureFile Control)

Resets the control to its initial state.

Syntax

azurefilecontrol.Reset 

Remarks

This method resets the control to its initial state.

ResizeFile Method (AzureFile Control)

Resizes a file.

Syntax

azurefilecontrol.ResizeFile FilePath, NewSize

Remarks

This method resizes the file at the specified FilePath in the share currently selected by Share. NewSize, which is specified in bytes, cannot be negative.

SetShareQuota Method (AzureFile Control)

Sets a share's space quota.

Syntax

azurefilecontrol.SetShareQuota Quota

Remarks

This method sets the size, in GB, of the space quota imposed on the share currently selected by the Share property. Quota must be greater than 0.

It is legal to lower a share's quota to a value less than its current space usage. However, doing so will prevent new space from being allocated until either the space usage falls below quota or the quota is raised above the space usage.

UpdateMetadata Method (AzureFile Control)

Sets the metadata for a file, folder, or share.

Syntax

azurefilecontrol.UpdateMetadata Path, ResourceType

Remarks

This method sets the metadata for a file, folder, or share to the items currently held by the Metadata* properties. The ResourceType parameter indicates the kind of resource the control should prepare the request for; possible values are:

• 0: Set the metadata for the file at the specified Path in the share currently selected by Share.
• 1: Set the metadata for the folder at the specified Path in the share currently selected by Share.
• 2: Set the metadata for the share currently selected by Share (Path is ignored).

Note that it is not possible to do a partial metadata update. That is, all metadata currently associated with the remote entity will be replaced with the metadata sent in the request.

UploadFile Method (AzureFile Control)

Uploads a new file resource.

Syntax

azurefilecontrol.UploadFile NewFilePath

Remarks

This method uploads a new file resource at the specified NewFilePath in the share currently selected by Share. The path of the newly-created file is returned.

Any parent folders included in NewFilePath must already exist.

If the SendMetadata configuration setting is enabled when this method is called, all items in the Metadata* properties will be sent along with the creation request.

If LocalFile is set the file will be uploaded from the specified path. If LocalFile is not set the data in ResourceData will be used.

To encrypt the file before uploading it, set EncryptionAlgorithm and EncryptionPassword.

Upload Notes

The UploadFile method is a convenience method that performs a resumable file upload. When called, the control first uses CreateFile to initialize a new file entry on the server; and then it fragments the file data into smaller pieces and calls PutRange multiple times in succession to upload those fragments. The fragment size is fixed at 4MB (this is a server limitation that cannot be changed).

During the upload, the FragmentComplete event fires after each fragment is uploaded to indicate overall progress. The control also updates StartByte as necessary to indicate the current offset in the file.

If the upload is interrupted for any reason, resuming it is easy. First, verify that StartByte is populated (if the same instance of the control is used, they should already be populated, and no special action should be needed). Then call UploadFile again to resume the upload at the specified StartByte offset. azurefile.LocalFile = "../MyFile.zip"; azurefile.UploadFile("MyFile.zip"); //The transfer is interrupted and UploadFile() above fails. Later, resume the download. //Using the same instance StartByte is already populated from the previous upload attempt. azurefile.UploadFile("MyFile.zip");

EndTransfer Event (AzureFile Control)

This event fires when a document finishes transferring.

Syntax

Sub azurefilecontrol_EndTransfer(Direction As Integer)

Remarks

The EndTransfer event is fired when the document text finishes transferring from the server to the local host.

The Direction parameter shows whether the client (0) or the server (1) is sending the data.

Error Event (AzureFile Control)

Fired when information is available about errors during data delivery.

Syntax

Sub azurefilecontrol_Error(ErrorCode As Integer, Description As String)

Remarks

The Error event is fired in case of exceptional conditions during message processing. Normally the control fails with an error.

The ErrorCode parameter contains an error code, and the Description parameter contains a textual description of the error. For a list of valid error codes and their descriptions, please refer to the Error Codes section.

FragmentComplete Event (AzureFile Control)

Fires after each fragment of a resumable upload is completed.

Syntax

Sub azurefilecontrol_FragmentComplete(FragmentNumber As Integer, FragmentCount As Integer, Interrupt As Boolean)

Remarks

When UploadFile is called, this event will fire after each fragment is uploaded, providing an indication of overall upload progress.

FragmentNumber is the number of the current fragment that has completed. This value begins at 1.

FragmentCount is the total number of fragments that will be uploaded.

Interrupt can be set to to interrupt the upload. The upload may be resumed later.

Header Event (AzureFile Control)

This event is fired every time a header line comes in.

Syntax

Sub azurefilecontrol_Header(Field As String, Value As String)

Remarks

The Field parameter contains the name of the HTTP header (which is the same as it is delivered). The Value parameter contains the header contents.

If the header line being retrieved is a continuation header line, then the Field parameter contains "" (empty string).

Log Event (AzureFile Control)

This event fires once for each log message.

Syntax

Sub azurefilecontrol_Log(LogLevel As Integer, Message As String, LogType As String)

Remarks

This event fires once for each log message generated by the control. The verbosity is controlled by the LogLevel setting.

LogLevel indicates the level of message. Possible values are as follows:

The value 1 (Info) logs basic information, including the URL, HTTP version, and status details.

The value 2 (Verbose) logs additional information about the request and response.

The value 3 (Debug) logs the headers and body for both the request and response, as well as additional debug information (if any).

Message is the log entry.

LogType identifies the type of log entry. Possible values are as follows:

• "Info"
• "RequestHeaders"
• "ResponseHeaders"
• "RequestBody"
• "ResponseBody"
• "ProxyRequest"
• "ProxyResponse"
• "FirewallRequest"
• "FirewallResponse"

Progress Event (AzureFile Control)

Fires during an upload or download to indicate transfer progress.

Syntax

Sub azurefilecontrol_Progress(Direction As Integer, BytesTransferred As Long64, TotalBytes As Long64, PercentDone As Integer)

Remarks

This event fires during an upload or download to indicate the progress of the transfer of the entire request. By default, this event will fire each time PercentDone increases by one percent; the ProgressStep configuration setting can be used to alter this behavior.

Direction indicates whether the transfer is an upload (0) or a download (1).

BytesTransferred reflects the number of bytes that have been transferred so far, or 0 if the transfer is starting (however, see note below).

TotalBytes reflects the total number of bytes that are to be transferred, or -1 if the total is unknown. This amount includes the size of everything in the request like HTTP headers.

PercentDone reflects the overall progress of the transfer, or -1 if the progress cannot be calculated.

Note: By default, the control tracks transfer progress absolutely. If a transfer is interrupted and later resumed, the values reported by this event upon and after resumption will account for the data that was transferred before the interruption.

For example, if 10MB of data was successfully transferred before the interruption, then this event will fire with a BytesTransferred value of 10485760 (10MB) when the transfer is first resumed, and then continue to fire with successively greater values as usual.

This behavior can be changed by disabling the ProgressAbsolute configuration setting, in which case the control will treat resumed transfers as "new" transfers. In this case, the BytesTransferred parameter will always be 0 the first time this event fires, regardless of whether the transfer is new or being resumed.

ResourceList Event (AzureFile Control)

Fires once for each resource returned when listing resources.

Syntax

Sub azurefilecontrol_ResourceList(Name As String, Path As String, Share As String, ResourceType As Integer, ModifiedTime As String, Size As Long64, ETag As String)

Remarks

This event fires once for each resource returned when ListResources, GetFileInfo, or GetFolderInfo is called.

Name is the name of the resource.

Path is the full path of the resource (not including the share).

Share is the name of the share the resource resides in.

ResourceType reflects the resource's type. Possible values are:

ModifiedTime is the last modified time of the resource, formatted according to RFC 1123. (Note: this parameter is not populated by calls to ListResources.)

Size is the size of the file. Always 0 for folders.

ETag is the ETag of the resource. (Note: this parameter is not populated by calls to ListResources.)

ShareList Event (AzureFile Control)

Fires once for each share returned when listing shares.

Syntax

Sub azurefilecontrol_ShareList(Name As String, ModifiedTime As String, ETag As String, Quota As Integer)

Remarks

This event fires once for each share returned when ListShares or GetShareInfo is called.

Name is the name of the share.

ModifiedTime is the last modified time of the share, formatted according to RFC 1123.

ETag is the ETag of the share.

Quota is the share's space quota, in GB.

SSLServerAuthentication Event (AzureFile Control)

Fired after the server presents its certificate to the client.

Syntax

Sub azurefilecontrol_SSLServerAuthentication(CertEncoded As String, CertSubject As String, CertIssuer As String, Status As String, Accept As Boolean)

Remarks

During this event, the client can decide whether or not to continue with the connection process. The Accept parameter is a recommendation on whether to continue or close the connection. This is just a suggestion: application software must use its own logic to determine whether or not to continue.

When Accept is False, Status shows why the verification failed (otherwise, Status contains the string OK). If it is decided to continue, you can override and accept the certificate by setting the Accept parameter to True.

SSLStatus Event (AzureFile Control)

Fired when secure connection progress messages are available.

Syntax

Sub azurefilecontrol_SSLStatus(Message As String)

Remarks

The event is fired for informational and logging purposes only. This event tracks the progress of the connection.

StartTransfer Event (AzureFile Control)

This event fires when a document starts transferring (after the headers).

Syntax

Sub azurefilecontrol_StartTransfer(Direction As Integer)

Remarks

The StartTransfer event is fired when the document text starts transferring from the server to the local host.

The Direction parameter shows whether the client (0) or the server (1) is sending the data.

Transfer Event (AzureFile Control)

This event is fired while a document transfers (delivers document).

Syntax

Sub azurefilecontrol_Transfer(Direction As Integer, BytesTransferred As Long64, PercentDone As Integer, Text As String)

Remarks

The Text parameter contains the portion of the document text being received. It is empty if data are being posted to the server.

The BytesTransferred parameter contains the number of bytes transferred in this Direction since the beginning of the document text (excluding HTTP response headers).

The Direction parameter shows whether the client (0) or the server (1) is sending the data.

The PercentDone parameter shows the progress of the transfer in the corresponding direction. If PercentDone can not be calculated the value will be -1.

Note: Events are not re-entrant. Performing time-consuming operations within this event will prevent it from firing again in a timely manner and may affect overall performance.

Config Settings (AzureFile Control)

AzureFile Config Settings

<firstlevel>
  <one>value</one>
  <two>
    <item>first</item>
    <item>second</item>
  </two>
  <three>value three</three>
</firstlevel>

{
  "firstlevel": {
    "one": "value",
    "two": ["first", "second"],
    "three": "value three"
  }
}

HTTP Config Settings

TCPClient Config Settings

SSL Config Settings

-----BEGIN CERTIFICATE-----
MIIEKzCCAxOgAwIBAgIRANTET4LIkxdH6P+CFIiHvTowDQYJKoZIhvcNAQELBQAw
...
eWHV5OW1K53o/atv59sOiW5K3crjFhsBOd5Q+cJJnU+SWinPKtANXMht+EDvYY2w
F0I1XhM+pKj7FjDr+XNj
-----END CERTIFICATE-----
\r \n
-----BEGIN CERTIFICATE-----
MIIEFjCCAv6gAwIBAgIQetu1SMxpnENAnnOz1P+PtTANBgkqhkiG9w0BAQUFADBp
..
d8q23djXZbVYiIfE9ebr4g3152BlVCHZ2GyPdjhIuLeH21VbT/dyEHHA
-----END CERTIFICATE-----

-----BEGIN CERTIFICATE-----
MIIEKzCCAxOgAwIBAgIRANTET4LIkxdH6P+CFIiHvTowDQYJKoZIhvcNAQELBQAw
...
eWHV5OW1K53o/atv59sOiW5K3crjFhsBOd5Q+cJJnU+SWinPKtANXMht+EDvYY2w
F0I1XhM+pKj7FjDr+XNj
-----END CERTIFICATE-----
\r \n
-----BEGIN CERTIFICATE-----
MIIEFjCCAv6gAwIBAgIQetu1SMxpnENAnnOz1P+PtTANBgkqhkiG9w0BAQUFADBp
..
d8q23djXZbVYiIfE9ebr4g3152BlVCHZ2GyPdjhIuLeH21VbT/dyEHHA
-----END CERTIFICATE-----

Socket Config Settings

Base Config Settings

Trappable Errors (AzureFile Control)

Common Errors

The control may also return one of the following error codes, which are inherited from other controls.

HTTP Errors

The control may also return one of the following error codes, which are inherited from other controls.

TCPClient Errors

SSL Errors

TCP/IP Errors