Question

How correct add PropertyPath ?

I need binding usercontrol DataContext to DataContext, TwoWay.

    var binding = new Binding()
                          {
                              Mode = BindingMode.TwoWay,
                              Source = ((FrameworkElement)sender),
                              Path = new PropertyPath(FrameworkElement.DataContextProperty)
                          };
    binding.Source = ((FrameworkElement) sender);
    changeImage.SetBinding(FrameworkElement.DataContextProperty, binding);

Answer 1

binding.Path = new PropertyPath("DataContext")

Also it would help if you will say what is wrong with your code.