记WinForm DataGridView 新增行号列

下面是 DataGridView 新增行号封装的通用方法：

         /// <summary>
        /// 给DataGridView添加行号
        /// </summary>
        /// <param name="dgv"></param>
        /// <param name="e"></param>
        public static void DgvRowPostPaint(DataGridView dgv, DataGridViewRowPostPaintEventArgs e)
        {
            try
            {
                //添加行号 
                SolidBrush v_SolidBrush = new SolidBrush(dgv.RowHeadersDefaultCellStyle.ForeColor);
                int v_LineNo = 0;
                v_LineNo = e.RowIndex + 1;
                string v_Line = v_LineNo.ToString();
                e.Graphics.DrawString(v_Line, e.InheritedRowStyle.Font, v_SolidBrush, e.RowBounds.Location.X + 15, e.RowBounds.Location.Y + 5);
            }
            catch (Exception ex)
            {
                MessageBox.Show("添加行号时发生错误，错误信息：" + ex.Message, "操作失败");
            }
        }

方法调用：在需要添加的 DataGridView 里面选择 RowPostPaint 事件：

传入需要设置行号的控件名称即可

DgvRowPostPaint(this.DataGridView, e);