WebClient.UploadDataAsync Method (Uri, String, Byte, Object)
Assembly: System (in system.dll)
public void UploadDataAsync ( Uri address, string method, byte data, Object userToken )
public function UploadDataAsync ( address : Uri, method : String, data : byte, userToken : Object )
The URI of the resource to receive the data.
The HTTP method used to send the file to the resource. If null, the default is POST for http and STOR for ftp.
The data buffer to send to the resource.
A user-defined object that is passed to the method invoked when the asynchronous operation completes.
This method sends a data buffer to a resource. The data buffer is sent asynchronously using thread resources that are automatically allocated from the thread pool. The data is not encoded. To receive notification when the data upload completes, add an event handler to the UploadDataCompleted event.
This method does not block the calling thread while the data is being sent. To send data and block while waiting for the server's response, use one of the UploadData methods.
Asynchronous operations that have not completed can be canceled using the CancelAsync method.
If the BaseAddress property is not an empty string (""), and address does not contain an absolute URI, address must be a relative URI that is combined with BaseAddress to form the absolute URI of the requested data. If the QueryString property is not an empty string, it is appended to address.
This member outputs trace information when you enable network tracing in your application. For more information, see Network Tracing.
Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter EditionThe Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.