新增一个行号列

1        /**//// <summary>
 2        /// 添加行号
 3        /// </summary>
 4        /// <param name="sender"></param>
 5        /// <param name="e"></param>
 6        private void cMS_CNTRDataGridView_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e)
 7        {
 8            DataGridView dgv = (DataGridView)sender;
 9            if (dgv.Columns["rowid"] == null)
10            {
11                DataGridViewTextBoxColumn column = new DataGridViewTextBoxColumn();
12                column.Name = "rowid";
13                column.HeaderText = "序号";                
14                dgv.Columns.Insert(0,column);               
15            }
16            dgv.Rows[e.RowIndex].Cells["rowid"].Value = e.RowIndex;
17        }
18