WPF - Set Focus when a button is clicked - No Code Behind

Question

Is there a way to set Focus from one control to another using WPF Triggers?

Like the following example:

Answer 1

You could also use a WPF Behavior...

    public class FocusElementAfterClickBehavior : Behavior
{
    private ButtonBase _AssociatedButton;

    protected override void OnAttached()
    {
        _AssociatedButton = AssociatedObject;

        _AssociatedButton.Click += AssociatedButtonClick;
    }

    protected override void OnDetaching()
    {
        _AssociatedButton.Click -= AssociatedButtonClick;
    }

    void AssociatedButtonClick(object sender, RoutedEventArgs e)
    {
        Keyboard.Focus(FocusElement);
    }

    public Control FocusElement
    {
        get { return (Control)GetValue(FocusElementProperty); }
        set { SetValue(FocusElementProperty, value); }
    }

    // Using a DependencyProperty as the backing store for FocusElement.  This enables animation, styling, binding, etc...
    public static readonly DependencyProperty FocusElementProperty =
        DependencyProperty.Register("FocusElement", typeof(Control), typeof(FocusElementAfterClickBehavior), new UIPropertyMetadata());
}

Here is the XAML to use the behavior.

Include namespaces:

xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity" 
xmlns:local="clr-namespace:WpfApplication1"

Attach WPF Behavior to button and bind element you want to set focus to:

So this way you have no code behind and it is reusable on any control that inherits from ButtonBase.

Hope this helps someone.