//第一列增加行号

 GridViewl.CustomDrawRowIndicator += new DevExpress.XtraGrid.Views.Grid.RowIndicatorCustomDrawEventHandler( GridView_CustomDrawRowIndicator); 

   void GridView_CustomDrawRowIndicator(object sender, DevExpress.XtraGrid.Views.Grid.RowIndicatorCustomDrawEventArgs e)

        {

            //第一列增加行号

            if (e.Info 

.IsRowIndicator)

            {

                //if (this.IsGroupRow(e.RowHandle) == false)

                if (e.RowHandle >= 0)

                {

                    e.Info 

.DisplayText = Convert.ToInt32(e.RowHandle + 1).ToString();

                }

            }

        }

//设置宽度

        void GridView_RowCountChanged(object sender, EventArgs e)

        {

            //动态设置第一列的宽度

            string MeasureString = String.Format("{0}WA", rptGridControl1.GridView.RowCount);

            rptGridControl1.GridView.IndicatorWidth = this.rptGridControl1.CreateGraphics().MeasureString(MeasureString, new Font("宋体", 9)).ToSize().Width;

        }