WPF and initial focus

Question

It seems that when a WPF application starts, nothing has focus.

This is really weird. Every other framework I\'ve used does just what you\'d expect: puts initial foc

Answer 1

Based on the accepted answer implemented as an attached behavior:

using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;

namespace UI.Behaviors
{
    public static class FocusBehavior
    {
        public static readonly DependencyProperty FocusFirstProperty =
            DependencyProperty.RegisterAttached(
                "FocusFirst",
                typeof(bool),
                typeof(FocusBehavior),
                new PropertyMetadata(false, OnFocusFirstPropertyChanged));

        public static bool GetFocusFirst(Control control)
        {
            return (bool)control.GetValue(FocusFirstProperty);
        }

        public static void SetFocusFirst (Control control, bool value)
        {
            control.SetValue(FocusFirstProperty, value);
        }

        static void OnFocusFirstPropertyChanged(
            DependencyObject obj, DependencyPropertyChangedEventArgs args)
        {
            Control control = obj as Control;
            if (control == null || !(args.NewValue is bool))
            {
                return;
            }

            if ((bool)args.NewValue)
            {
                control.Loaded += (sender, e) =>
                    control.MoveFocus(new TraversalRequest(FocusNavigationDirection.Next));
            }
        }
    }
}

Use it like this: