Set focus on TextBox in WPF from view model

Question

I have a TextBox and a Button in my view.

Now I am checking a condition upon button click and if the condition turns out to be false, displ

Answer 1

After implementing the accepted answer I did run across an issue that when navigating views with Prism the TextBox would still not get focus. A minor change to the PropertyChanged handler resolved it

    private static void OnIsFocusedPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
    {
        var uie = (UIElement)d;
        if ((bool)e.NewValue)
        {
            uie.Dispatcher.BeginInvoke(DispatcherPriority.Input, new Action(() =>
            {
                uie.Focus();
            }));
        }
    }