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public partial class App : Application, ISingleInstanceApp
{
    static App application = new App();

    private const string Unique = "My_Unique_Application_String";
    [STAThread]
    public static void Main()
    {
        if (SingleInstance<App>.InitializeAsFirstInstance(Unique))
        {

            application.InitializeComponent();
            application.Run();
            // Allow single instance code to perform cleanup operations
            SingleInstance<App>.Cleanup();
        }
    }
  
    public bool SignalExternalCommandLineArgs(IList<string> args)
    {          
        application.MainWindow.Visibility = Visibility.Visible;
        application.MainWindow.Activate();
        application.MainWindow.BringIntoView();
        return true;
    }       
}


Funktioniert nur leider nicht :-)

Hat hier jemand einer Idee wie ich das Fenster in den Fordergrund bringen kann?