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UploadDataCompletedEventHandler Delegate

.NET Framework (current version)
 

Represents the method that will handle the UploadDataCompleted event of a WebClient.

Namespace:   System.Net
Assembly:  System (in System.dll)

C#
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public delegate void UploadDataCompletedEventHandler(
	Object^ sender,
	UploadDataCompletedEventArgs^ e
)

Parameters

sender
Type: System::Object^

The source of the event.

e
Type: System.Net::UploadDataCompletedEventArgs^

A UploadDataCompletedEventArgs containing event data.

When you create a UploadDataCompletedEventHandler delegate, you identify the method that will handle the event. To associate the event with your event handler, add an instance of the delegate to the event. The event handler is called whenever the event occurs, unless you remove the delegate. For more information about event handler delegates, see NIB: Events and Delegates.

The following code example demonstrates asynchronously uploading data.

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void UploadDataInBackground2( String^ address )
{
   WebClient^ client = gcnew WebClient;
   Uri ^uri = gcnew Uri(address);
   String^ text = "Time = 12:00am temperature = 50";
   array<Byte>^data = System::Text::Encoding::UTF8->GetBytes( text );
   String^ method = "POST";

   client->UploadDataCompleted += gcnew UploadDataCompletedEventHandler( UploadDataCallback2 );
   client->UploadDataAsync( uri, method, data );
}

The following method is called when the upload completes.

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void UploadDataCallback2( Object^ /*sender*/, UploadDataCompletedEventArgs^ e )
{
   array<Byte>^data = dynamic_cast<array<Byte>^>(e->Result);
   String^ reply = System::Text::Encoding::UTF8->GetString( data );
   Console::WriteLine( reply );
}

.NET Framework
Available since 2.0
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