WebRequest.GetRequestStreamAsync Method
When overridden in a descendant class, returns a Stream for writing data to the Internet resource as an asynchronous operation.
Namespace: System.Net
Assembly: System (in System.dll)
[HostProtectionAttribute(SecurityAction.LinkDemand, ExternalThreading = true)] public virtual Task<Stream> GetRequestStreamAsync()
Return Value
Type: System.Threading.Tasks.Task<Stream>Returns Task<TResult>.
The task object representing the asynchronous operation.
This operation will not block. The returned Task<TResult>object will complete when the Stream for writing data to the Internet resource is available.
 Note |
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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. |
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
