DoWorkEventHandler Delegate

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Represents the method that will handle the DoWork event that is raised when the RunWorkerAsync method is called.

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


Public Delegate Sub DoWorkEventHandler ( _
    sender As Object, _
    e As DoWorkEventArgs _
public delegate void DoWorkEventHandler(
    Object sender,
    DoWorkEventArgs e



When you create a DoWorkEventHandler 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 method is called whenever the event occurs, unless you remove the delegate. For more information about event-handler delegates, see Events, Delegates, and CLR Event System Conventions.

Version Information


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0


For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.