using System.Windows; using System.Windows.Controls; namespace MaterialDesignDemo { public static class XamlDisplayEx { public static readonly DependencyProperty ButtonDockProperty = DependencyProperty.RegisterAttached( "ButtonDock", typeof(Dock), typeof(XamlDisplayEx), new PropertyMetadata(default(Dock))); public static void SetButtonDock(DependencyObject element, Dock value) { element.SetValue(ButtonDockProperty, value); } public static Dock GetButtonDock(DependencyObject element) { return (Dock) element.GetValue(ButtonDockProperty); } } }