DispatcherFrame Class

Represents an execution loop in the Dispatcher.

Namespace: System.Windows.Threading
Assembly: WindowsBase (in windowsbase.dll)

public class DispatcherFrame : DispatcherObject
public class DispatcherFrame extends DispatcherObject
public class DispatcherFrame extends DispatcherObject
 You cannot use this managed class in XAML. 

DispatcherFrame objects typically fall into two categories:

  • Long running, general purpose frames that exit only when instructed to. These frames should exit when they are requested.

  • Short running, very specific frames that exit when an important criteria is met. These frames may consider not to exit when they are requested in favor of waiting for their exit criteria to be met. These frames should have a time-out associated with them.

The following example shows how to use a DispatcherFrame to achieve similar results as the Windows Forms DoEvents method.

public void DoEvents()
    DispatcherFrame frame = new DispatcherFrame();
        new DispatcherOperationCallback(ExitFrame), frame);

public object ExitFrames(object f)
    ((DispatcherFrame)f).Continue = false;
    return null;


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0

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