When overridden in a descendant class, gets or sets the content length of the request data being sent.
A long containing the number of bytes of request data being sent.
Type Reason NotSupportedException This property is not implemented in the derived class. InvalidOperationException Data has already been written to the request stream. ArgumentOutOfRangeException This property is being set to a value less than zero.
The WebRequest.ContentLength property contains the number of bytes of data sent to the Internet resource by the System.Net.WebRequest instance.
The System.Net.WebRequest class is an abstract class. The actual behavior of System.Net.WebRequest instances at run time is determined by the descendant class returned by the WebRequest.Create(Uri) method. For more information about default values and exceptions, see the documentation for the descendant classes, such as System.Net.HttpWebRequest and System.Net.FileWebRequest.