Question

I have a WPF application with the main Window class called MainWindow.
Since I have other classes that need to access the Dispatcher of the UI thread to update bounded lists, I found this solution:

I made a static class:

 static class UI 
    {
        static public MainWindow window;
    }

And added the following line in the app constructor:

 public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();

            UI.window = this;
...

Now I can access the components of my GUI everywhere by using UI.window.Dispatcher.Invoke().

The question is – is this a good programming practice?
Is there a better method of doing so?

Thank you

Update:

I seem to get the exception thrown only when I update an ObservableCollection which is bound to a 3rd party control. I have another static OC bound to a listbox (to display updated messages) and I can update that one from other threads without using the dispatcher.
How come?
Is it because its a static OC or is it related to the control?

Answer 1

If its only about the dispatcher, you can do this

Application.Current.Dispatcher.Invoke(DispatcherPriority.Background, (Action)delegate()
    {
    });