public ListElement()
        {
            this.MouseDown += new MouseEventHandler(this.ListElement_MouseDown);
            this.MouseMove += new MouseEventHandler(this.ListElement_MouseMove);
            this.MouseUp += new MouseEventHandler(this.ListElement_MouseUp);
        }

        void ListElement_MouseDown(object sender, MouseEventArgs e)
        {
            Debug.WriteLine("mouse down");
        }

        void ListElement_MouseMove(object sender, MouseEventArgs e)
        {
            Debug.WriteLine("MouseMove");
        }

        void ListElement_MouseUp(object sender, MouseEventArgs e)
        {
            Debug.WriteLine("MouseUp");
        }