DispatcherExtensions.BeginInvoke Method (Dispatcher, Action, DispatcherPriority)
.NET Framework 3.5
Updated: July 2008
Executes the specified delegate asynchronously with the specified priority on the thread that the specified Dispatcher was created on.
Assembly: System.Windows.Presentation (in System.Windows.Presentation.dll)
public static DispatcherOperation BeginInvoke( this Dispatcher dispatcher, Action action, DispatcherPriority priority )
Parameters
- dispatcher
- Type: System.Windows.Threading.Dispatcher
The dispatcher that executes the delegate.
- action
- Type: System.Action
The delegate to execute, which takes no arguments and does not return a value.
- priority
- Type: System.Windows.Threading.DispatcherPriority
The execution priority of the delegate relative to other pending operations in the Dispatcher event queue.
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type Dispatcher. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).| Exception | Condition |
|---|---|
| ArgumentNullException | action is null. |
| InvalidEnumArgumentException | priority is not a valid DispatcherPriority. |
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
