/// <summary>
        /// 让gv的列宽相等
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void gvDataNavigation_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            foreach (TableCell tc in e.Row.Cells)
            {
                tc.Attributes["style"] = "width:100px;";
            }
        }