mcs/class/referencesource/System.Activities.Presentation/System.Activities.Presentation/System/Activities/Presentation/TaskDispatcher.cs

   1 //----------------------------------------------------------------
   2 // <copyright company="Microsoft Corporation">
   3 //     Copyright (c) Microsoft Corporation.  All rights reserved.
   4 // </copyright>
   5 //----------------------------------------------------------------
   6
   7 namespace System.Activities.Presentation
   8 {
   9     using System;
  10     using System.Threading;
  11     using System.Windows.Threading;
  12
  13     internal class TaskDispatcher
  14     {
  15         // We need to keep a reference to the WPF Dispatcher so that we can dispatch work to the UI Thread.
  16         private Dispatcher dispatcher;
  17
  18         // This constructor must be executed on the UI thread.
  19         internal TaskDispatcher()
  20         {
  21             this.dispatcher = Dispatcher.CurrentDispatcher;
  22         }
  23
  24         internal virtual void DispatchWorkOnUIThread(DispatcherPriority priority, Delegate method)
  25         {
  26             this.dispatcher.BeginInvoke(priority, method);
  27         }
  28
  29         internal virtual void DispatchWorkOnBackgroundThread(WaitCallback work, object state)
  30         {
  31             ThreadPool.QueueUserWorkItem(work, state);
  32         }
  33     }
  34 }