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DownloadProgressChangedEventArgs Class
Visual Studio 2010
Provides data for the DownloadProgressChanged event of a WebClient.
System::Object
System::EventArgs
System.ComponentModel::ProgressChangedEventArgs
System.Net::DownloadProgressChangedEventArgs
System::EventArgs
System.ComponentModel::ProgressChangedEventArgs
System.Net::DownloadProgressChangedEventArgs
Assembly: System (in System.dll)
The DownloadProgressChangedEventArgs type exposes the following members.
| Name | Description | |
|---|---|---|
![]() ![]() | BytesReceived | Gets the number of bytes received. |
![]() ![]() | ProgressPercentage | Gets the asynchronous task progress percentage. (Inherited from ProgressChangedEventArgs.) |
![]() ![]() | TotalBytesToReceive | Gets the total number of bytes in a WebClient data download operation. |
![]() ![]() | UserState | Gets a unique user state. (Inherited from ProgressChangedEventArgs.) |
| Name | Description | |
|---|---|---|
![]() ![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() ![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
![]() ![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() ![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() ![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() ![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
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"); void DownLoadFileInBackground2( String^ address ) { WebClient^ client = gcnew WebClient; Uri ^uri = gcnew Uri(address); // Specify that the DownloadFileCallback method gets called // when the download completes. client->DownloadFileCompleted += gcnew AsyncCompletedEventHandler( DownloadFileCallback2 ); // Specify a progress notification handler. client->DownloadProgressChanged += gcnew DownloadProgressChangedEventHandler( DownloadProgressCallback ); client->DownloadFileAsync( uri, "serverdata.txt" ); }
The following code example shows an implementation of a handler for this event.
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); } 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); }
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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