gridControl添加行号

//编辑列的行号
        private void gvDataInfo_CustomDrawRowIndicator(object sender, DevExpress.XtraGrid.Views.Grid.RowIndicatorCustomDrawEventArgs e)

        {

   //修改行号的显示宽度

            this.gvDataInfo.IndicatorWidth = 20 * this.dtXT.Rows.Count.ToString().Length;
            if (e.Info.IsRowIndicator && e.RowHandle >= 0)
            {
                e.Info.DisplayText = (e.RowHandle + 1).ToString();
            }
        }