Binding in code behind

Binding binding = new Binding();
            binding.Source = this;
            binding.Path = new PropertyPath("ActualInterior");
            element.SetBinding(Shape.FillProperty, binding);
            binding = new Binding();
            binding.Source = this;
            binding.Path = new PropertyPath("ActualInterior");
            element.SetBinding(Shape.StrokeProperty, binding);

Binding binding = new Binding();
            binding.Source = this;
            binding.Path = new PropertyPath("ActualInterior");
            element.SetBinding(Shape.FillProperty, binding);
            element.SetBinding(Shape.StrokeProperty, binding);