Assembly: System.Net (in System.Net.dll)
Thetype exposes the following members.
Classes that implement the interface can be registered with the WebRequest class and associated with a specific URI scheme so that the WebRequest calls the class's Create method when a URI that matches that scheme is requested.
If you use this API in your app, you must specify the following capabilities in the app manifest. Otherwise, your app might not work correctly or it might exit unexpectedly.
Windows Phone 8, Windows Phone OS 7.1
For more info, see App capabilities and hardware requirements for Windows Phone 8.