private static void OnSetCommandCallback(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs e)
{
Control textBox = dependencyObject as Control;
if (textBox != null)
{
ReturnCommandBehavior behavior = GetOrCreateBehavior(textBox);
behavior.Command = e.NewValue as ICommand;
}
}
private static ReturnCommandBehavior GetOrCreateBehavior(Control textBox)
{
ReturnCommandBehavior behavior = textBox.GetValue(ReturnCommandBehaviorProperty) as ReturnCommandBehavior;
if (behavior == null)
{
behavior = new ReturnCommandBehavior(textBox);
textBox.SetValue(ReturnCommandBehaviorProperty, behavior);
}
return(behavior);
}
