Winform 中DataGridView控件添加行标题

有很多种方法。

1、可以在DataGridView控件中的RowStateChanged事件改变行标题单元格的值（Row.HeaderCell.Value）

         /// <summary>
         /// 行状态更改时发生
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void dataGridView1_RowStateChanged(object sender, DataGridViewRowStateChangedEventArgs e)
         {             
　　　　//e.Row.HeaderCell.Value =  string.Format("{0}", e.Row.Index + 1);
             e.Row.HeaderCell.Value = (e.Row.Index + ).ToString();//添加行号
        }

2、可以在DataGridView控件中的RowPostPaint事件例进行设置，TextRenderer类的DrawText()方法使用指定的设备上下文、字体、颜色和格式说明在指定界限中绘制指定文本。

         /// <summary>
         /// 所有单元格绘制后，执行 行绘制时发生
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void dataGridView1_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e)
         {
             //
             System.Drawing.Rectangle rectangle = new Rectangle(e.RowBounds.Location.X, e.RowBounds.Y, this.dataGridView1.RowHeadersWidth - , this.dataGridView1.ColumnHeadersHeight);
             TextRenderer.DrawText(e.Graphics, (e.RowIndex + ).ToString(), this.dataGridView1.RowHeadersDefaultCellStyle.Font, rectangle, this.dataGridView1.RowHeadersDefaultCellStyle.ForeColor, TextFormatFlags.VerticalCenter | TextFormatFlags.Right);//”TextFormatFlags.VerticalCenter | TextFormatFlags.Right“中“|”有增加的作用，此处添加了两种文本字符格式样式
         }

dev 的DevExpress.XtraGrid.Views.Grid.GridView控件添加行号：

        /// <summary>
        /// GridView  显示行号   设置行号列的宽度
        /// </summary>
        /// <param name="gv">GridView 控件名称</param>
        /// <param name="width">行号列的宽度 如果为null或为0 默认为30</param>
        public void DrawRowIndicator(DevExpress.XtraGrid.Views.Grid.GridView gv, int width)
        {
            gv.CustomDrawRowIndicator += new DevExpress.XtraGrid.Views.Grid.RowIndicatorCustomDrawEventHandler(gv_CustomDrawRowIndicator);
            //if (width != null)
            //{
            if (width != )
            {
                gv.IndicatorWidth = width;
            }
            else
            {
                gv.IndicatorWidth = ;
            }
            //}
            //else
            //{
            //    gv.IndicatorWidth = 30;
            //}
        }
        /// <summary>
        /// 行号设置
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void gv_CustomDrawRowIndicator(object sender, DevExpress.XtraGrid.Views.Grid.RowIndicatorCustomDrawEventArgs e)
        {
            if (e.Info.IsRowIndicator && e.RowHandle > -)
            {
                e.Info.DisplayText = (e.RowHandle + ).ToString();
            }
        }