MVVM Light Threading Ejemplo

Question

¿Hay algún ejemplo sobre cómo usar la porción Threading de MVVM Light? ¿Cuál es la ventaja de usar MVVMLight.threading sobre el enhebrado normal de .NET?

Answer 1

se parece a todas parte con hilo en mvvmlight es esta clase:

public static class DispatcherHelper 
{ 

    public static Dispatcher UIDispatcher 
    { 
     get; 
     private set; 
    } 

    /// <summary> 
    /// Executes an action on the UI thread. If this method is called 
    /// from the UI thread, the action is executed immendiately. If the 
    /// method is called from another thread, the action will be enqueued 
    /// on the UI thread's dispatcher and executed asynchronously. 
    /// <para>For additional operations on the UI thread, you can get a 
    /// reference to the UI thread's dispatcher thanks to the property 
    /// <see cref="UIDispatcher" /></para>. 
    /// </summary> 
    /// <param name="action">The action that will be executed on the UI 
    /// thread.</param> 
    public static void CheckBeginInvokeOnUI(Action action) 
    { 
     if (UIDispatcher.CheckAccess()) 
     { 
      action(); 
     } 
     else 
     { 
      UIDispatcher.BeginInvoke(action); 
     } 
    } 

    /// <summary> 
    /// This method should be called once on the UI thread to ensure that 
    /// the <see cref="UIDispatcher" /> property is initialized. 
    /// <para>In a Silverlight application, call this method in the 
    /// Application_Startup event handler, after the MainPage is constructed.</para> 
    /// <para>In WPF, call this method on the static App() constructor.</para> 
    /// </summary> 
    public static void Initialize() 
    { 
     if (UIDispatcher != null) 
     { 
      return; 
     } 

     // for silverlight 
     UIDispatcher = Deployment.Current.Dispatcher; 

     // wpf 
     //IDispatcher = Dispatcher.CurrentDispatcher; 

    } 
} 

}

y eso es todo. Utilice DispatcherHelper.Initialize() de acuerdo a comentar en la App constructor estático (WPF) o controlador de eventos Application_Startup (Silverlight) - y entonces u puede utilizar DispatcherHelper.CheckBeginInvokeOnUI (acción Acción)

Saludos