ProgressChangedEventHandler Delegate
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ProgressChangedEventHandler Delegate


Represents the method that will handle the ProgressChanged event of the BackgroundWorker class. This class cannot be inherited.

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

[HostProtectionAttribute(SecurityAction.LinkDemand, SharedState = true)]
public delegate void ProgressChangedEventHandler(
	object sender,
	ProgressChangedEventArgs e


Type: System.Object

The source of the event.

Type: System.ComponentModel.ProgressChangedEventArgs

A ProgressChangedEventArgs that contains the event data.

When you create a ProgressChangedEventHandler delegate, you identify a method to 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 shows how to use the ProgressChangedEventHandler class. This example is part of a larger example for the BackgroundWorker class.

// This event handler updates the progress bar.
private void backgroundWorker1_ProgressChanged(object sender,
    ProgressChangedEventArgs e)
    this.progressBar1.Value = e.ProgressPercentage;

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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