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DownloadProgressChangedEventArgs Class
.NET Framework 3.0
Provides data for the DownloadProgressChanged event of a WebClient.
Namespace: System.Net
Assembly: System (in system.dll)
Assembly: System (in system.dll)
Instances of this class are passed to the DownloadProgressChangedEventHandler.
The following code example demonstrates setting an event handler for the DownloadProgressChanged event.
// Sample call : DownLoadFileInBackground2 ("http://www.contoso.com/logs/January.txt"); public static void DownLoadFileInBackground2 (string address) { WebClient client = new WebClient (); Uri uri = new Uri(address); // Specify that the DownloadFileCallback method gets called // when the download completes. client.DownloadFileCompleted += new AsyncCompletedEventHandler (DownloadFileCallback2); // Specify a progress notification handler. client.DownloadProgressChanged += new DownloadProgressChangedEventHandler(DownloadProgressCallback); client.DownloadFileAsync (uri, "serverdata.txt"); }
The following code example shows an implementation of a handler for this event.
private static void UploadProgressCallback(object sender, UploadProgressChangedEventArgs e) { // Displays the operation identifier, and the transfer progress. Console.WriteLine("{0} uploaded {1} of {2} bytes. {3} % complete...", (string)e.UserState, e.BytesSent, e.TotalBytesToSend, e.ProgressPercentage); } private static void DownloadProgressCallback(object sender, DownloadProgressChangedEventArgs e) { // Displays the operation identifier, and the transfer progress. Console.WriteLine("{0} downloaded {1} of {2} bytes. {3} % complete...", (string)e.UserState, e.BytesReceived, e.TotalBytesToReceive, e.ProgressPercentage); }
System.Object
System.EventArgs
System.ComponentModel.ProgressChangedEventArgs
System.Net.DownloadProgressChangedEventArgs
System.EventArgs
System.ComponentModel.ProgressChangedEventArgs
System.Net.DownloadProgressChangedEventArgs
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 Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.Community Additions
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