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UploadDataCompletedEventHandler Delegate
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UploadDataCompletedEventHandler Delegate

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

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

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 Events and Delegates.

The following code example demonstrates asynchronously uploading data.

    public static void UploadDataInBackground2 (string address)
    {
        WebClient client = new WebClient ();
        Uri uri = new Uri(address);
        string text = "Time = 12:00am temperature = 50";
        byte[] data = System.Text.Encoding.UTF8.GetBytes (text);
        string method = "POST";

        client.UploadDataCompleted += new UploadDataCompletedEventHandler (UploadDataCallback2);
        client.UploadDataAsync (uri, method, data);
    }

The following method is called when the upload completes.

    private static void UploadDataCallback2 (Object sender, UploadDataCompletedEventArgs e)
    {
        byte[] data = (byte[])e.Result;
        string reply = System.Text.Encoding.UTF8.GetString (data);

        Console.WriteLine (reply);
    }

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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