When overridden in a descendant class, returns a Stream for writing data to the Internet resource as an asynchronous operation.
Assembly: System (in System.dll)
After you call , make sure you close the request stream before you call GetResponseAsync.
The HostProtectionAttribute attribute applied to this type or member has the following Resources property value: ExternalThreading. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes.