مشکل در ایجاد textbox سفارشی

[mmd2009]

و ...

 class mytextbox : TextBox

    {

        public mytextbox()

            : base()

        {

            this.Font = new System.Drawing.Font

                ("tahoma", 10, System.Drawing.FontStyle.Regular);



            this.Resize += new EventHandler(mytextbox_Resize);



        }



        void mytextbox_Resize(object sender, EventArgs e)

        {

            MessageBox.Show("d");

        }



    }