WebClient.UploadDataCompleted Event

Definition

Namespace:

System.Net

Assemblies:

netstandard.dll, System.Net.WebClient.dll

Source:

WebClient.cs

Occurs when an asynchronous data-upload operation completes.

C#

public event System.Net.UploadDataCompletedEventHandler? UploadDataCompleted;

Event Type

UploadDataCompletedEventHandler

Examples

The following code example demonstrates setting an event handler for this event.

C#

public static void UploadDataInBackground3(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);

    client.UploadDataCompleted += new UploadDataCompletedEventHandler(UploadDataCallback3);
    client.UploadDataAsync(uri, data);
}

The following code example shows an implementation of a handler for this event.

C#

private static void UploadDataCallback3(Object sender, UploadDataCompletedEventArgs e)
{
    byte[] data = (byte[])e.Result;
    string reply = System.Text.Encoding.UTF8.GetString(data);

    Console.WriteLine(reply);
}

Remarks

Caution

WebRequest, HttpWebRequest, ServicePoint, and WebClient are obsolete, and you shouldn't use them for new development. Use HttpClient instead.

This event is raised each time an asynchronous data upload operation completes. Asynchronous data uploads are started by calling the UploadDataAsync methods.

The UploadDataCompletedEventHandler is the delegate for this event. The UploadDataCompletedEventArgs class provides the event handler with event data.

For more information about how to handle events, see Handling and Raising Events.

Applies to