protected void modDeleteCommand(Object sender, GridViewDeleteEventArgs e)
        {
            int id = Convert.ToInt32(GridView1.DataKeys[e.RowIndex].Value);
            ClassTitleName t = new ClassTitleName();
            t.TITLE_ID = id;
            t.DeleteTitleName();
            ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "alertMessage", "alert('ลบข้อมูลเรียบร้อย')", true);

            GridView1.EditIndex = -1;
            BindData1();
        }