GridView显示行号

//显示行号
 private void gridView1_CustomDrawRowIndicator(object sender, DevExpress.XtraGrid.Views.Grid.RowIndicatorCustomDrawEventArgs e)
 {
     e.Appearance.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Far;
     if (e.Info.IsRowIndicator)
     {
        if (e.RowHandle >= 0)
        {
           e.Info.DisplayText = (e.RowHandle + 1).ToString();
        }
        else if (e.RowHandle < 0 && e.RowHandle > -1000)
        {
           e.Info.Appearance.BackColor = System.Drawing.Color.AntiqueWhite;
           e.Info.DisplayText = "G" + e.RowHandle.ToString();
        }
     }
}