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POWpf Xaml view not updating
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  1. POWpf Xaml view not updating
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    copied!<p>I have a splash screen that is supposed to show the loading process as the program starts up. I cannot get the text in the label to update as components are loaded.</p> <p>From the main start-up program.cs I call the run() method in the splash screen controller.</p> <pre><code>startUpSplash.Run(); </code></pre> <p>Here is the controller. This shows the splash screen with the label "Initializing..."</p> <pre><code> public class StartUpSplashController { public StartUpSplashViewModel ViewModel { get; set; } private StartUpSplashView starUpSplashWindow = new StartUpSplashView(); private delegate void UIDelegate(); public void Run() { InitializeViewModel(); ViewModel.StatusMessage = "Initializing..."; starUpSplashWindow.DataContext = ViewModel; starUpSplashWindow.Show(); } public void UpdateStatus(string statusMessage) { starUpSplashWindow.Dispatcher.Invoke(new UIDelegate(delegate { ViewModel.StatusMessage = statusMessage; })); //ViewModel.StatusMessage = statusMessage; } public void End() { starUpSplashWindow.Close(); starUpSplashWindow.InvalidateVisual(); } private void InitializeViewModel() { ViewModel = new StartUpSplashViewModel(starUpSplashWindow); ViewModel.Controller = this; } } </code></pre> <p>Then from the main program.cs as different things are happening I call this UpdateStatus method also in the splash controller. This is meant to update the label to show all the different thing that are happening.</p> <p>This is the Xaml for the lbl that is supposed to be getting updated.</p> <pre><code> &lt;Label Content="{Binding Path=StatusMessage, Mode=TwoWay, UpdateSourceTrigger= PropertyChanged}" /&gt; </code></pre> <p>The label is not updating when the UpdateStatus method is called. One strange thing I noticed was that if I did a </p> <pre><code>startupSplash.UpdateStatus("something"); </code></pre> <p>and then</p> <pre><code>Messagebox.show("something"); </code></pre> <p>The splash screen shows the updated label after the messagebox has popped up.</p> <p>Any help with this would be appreciated.</p> <p>UPDATE 2: Here is the View Model</p> <pre><code>public class StartUpSplashViewModel : ViewModel&lt;IView&gt; { [ImportingConstructor] public StartUpSplashViewModel(StartUpSplashView view) : base(view) { } public StartUpSplashController Controller { get; set; } private string _statusMessage; public string StatusMessage { get { return _statusMessage; } set { if (_statusMessage == value) return; _statusMessage = value; this.RaisePropertyChanged(s =&gt; s.StatusMessage); } } } </code></pre>
 

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