Get resource property names from the server.
FindPropertyNames will request names of all the properties of ResourceURI. The matching URIs will be returned through one or more ResourceProperties events (one for each matching resource), and the property names will be provided through the Properties collection.
Depth is used to determine which resources or properties are retrieved from the server. A depth of ResourceOnly will return only the resource associated with ResourceURI, or its properties. A depth of Infinity will return all resources contained within hierarchy, or their collective properties.
Note: Some servers (such as IIS 7.5) may not support a depth of Infinity by default and may return a HTTP 403 Forbidden response.