Append Method
Adds specified file to an existing archive.
Syntax
[VB.NET] Public Sub Append()
[C#] public void Append();
Remarks
The file contained in the FileDecompressedName property will be appended to the archive specified by ArchiveFile.
This method may only be used to add files to an existing archive. To add files to a new archive, Compress method should be used.
NOTE: This method has a corresponding asynchronous version (AppendAsync) for use in the Xamarin environment.