Provides data for the UploadFileCompleted event.
Assembly: System (in System.dll)
Gets a value indicating whether an asynchronous operation has been canceled.(Inherited from AsyncCompletedEventArgs.)
Gets a value indicating which error occurred during an asynchronous operation.(Inherited from AsyncCompletedEventArgs.)
Gets the server reply to a data upload operation that is started by calling an UploadFileAsync method.
Gets the unique identifier for the asynchronous task.(Inherited from AsyncCompletedEventArgs.)
Determines whether the specified object is equal to the current object.(Inherited from Object.)
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)
Serves as the default hash function. (Inherited from Object.)
Raises a user-supplied exception if an asynchronous operation failed.(Inherited from AsyncCompletedEventArgs.)
Returns a string that represents the current object.(Inherited from Object.)
The following code example demonstrates asynchronously uploading a file.
' Sample call: UploadFileInBackground2("http:' www.contoso.com/fileUpload.aspx", "data.txt") Public Shared Sub UploadFileInBackground2(ByVal address As String, ByVal fileName As String) Dim client As WebClient = New WebClient() Dim uri as Uri = New Uri(address) AddHandler client.UploadFileCompleted, AddressOf UploadFileCallback2 ' Specify a progress notification handler. AddHandler client.UploadProgressChanged, AddressOf UploadProgressCallback client.UploadFileAsync(uri, "POST", fileName) Console.WriteLine("File upload started.") End Sub
The following method is called when the upload completes.
Available since 2.0
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.