WPF/Multithreading: UI Dispatcher in MVVM

Question

So say in an MVVM environment, I\'m in a background thread and I\'d like to run an update on a ui control. So normally I\'d go myButton.Dispatcher.BeginInvoke(blabla) but I

Answer 1

From Caliburn Micro source code :

public static class Execute
{
    private static Action executor = action => action();

    /// 

    /// Initializes the framework using the current dispatcher.
    /// 
    public static void InitializeWithDispatcher()
    {
#if SILVERLIGHT
        var dispatcher = Deployment.Current.Dispatcher;
#else
        var dispatcher = Dispatcher.CurrentDispatcher;
#endif
        executor = action =>{
            if(dispatcher.CheckAccess())
                action();
            else dispatcher.BeginInvoke(action);
        };
    }

    /// 

    /// Executes the action on the UI thread.
    /// 
    /// The action to execute.
    public static void OnUIThread(this System.Action action)
    {
        executor(action);
    }
}

Before using it you'll have to call Execute.InitializeWithDispatcher() from the UI thread then you can use it like this Execute.OnUIThread(()=>SomeMethod())