protected void grid_RowDeleting(object sender, DevExpress.Web.Data.ASPxDataDeletingEventArgs e)
        {
            this.khanang = obj.GetKhaNang(Int32.Parse(e.Keys[grid.KeyFieldName].ToString()));
            if (this.khanang != null)
            {
                this.obj.XoaKhaNang(this.khanang);
            }

            grid.CancelEdit();
            e.Cancel        = true;
            grid.DataSource = obj.GetKhaNangs();
            grid.DataBind();
        }
        protected void grid_RowUpdating(object sender, DevExpress.Web.Data.ASPxDataUpdatingEventArgs e)
        {
            ASPxTextBox text = grid.FindEditFormTemplateControl("txtName") as ASPxTextBox;


            this.khanang = obj.GetKhaNang(Int32.Parse(e.Keys[grid.KeyFieldName].ToString()));


            this.khanang.KhaNang = text.Text;

            this.obj.CapNhatKhaNang(this.khanang);


            grid.CancelEdit();
            e.Cancel        = true;
            grid.DataSource = obj.GetKhaNangs();
            grid.DataBind();
        }