When overridden in a descendant class, provides an asynchronous method to request a stream.
Assembly: System.Net (in System.Net.dll)
'Declaration Public MustOverride Function BeginGetRequestStream ( _ callback As AsyncCallback, _ state As Object _ ) As IAsyncResult
- Type: System.Object
An object containing state information for this asynchronous request.
Any attempt is made to access the method, when the method is not overridden in a descendant class.
The method starts an asynchronous request for a stream used to send data to an Internet resource. The callback method that implements the AsyncCallback delegate uses the EndGetRequestStream method to return the request stream.
The WebRequest class is an abstract class. The actual behavior of WebRequest instances at run time is determined by the descendant class returned by the WebRequest.Create method. For more information about default values and exceptions, see the documentation for the descendant classes, such as HttpWebRequest.
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.