WPF - Remove focus when clicking outside of a textbox

Question

I have some textboxes where I would like focus to behave a little differently than normal for a WPF application. Basically, I would like them to behave more like a textbox b

Answer 1

To avoid code behind you can use this Behavior The behavior

 public class ClearFocusOnClickBehavior : Behavior
 {
    protected override void OnAttached()
    {
        AssociatedObject.MouseDown += AssociatedObject_MouseDown;
        base.OnAttached();
    }

    private static void AssociatedObject_MouseDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
    {
        Keyboard.ClearFocus();
    }

    protected override void OnDetaching()
    {
        AssociatedObject.MouseDown -= AssociatedObject_MouseDown;
    }
}

Useing in XAML:

On any element outside the text box that you want him to clear the focus on click add: