记WinForm DataGridView 新增行号列

下面是 DataGridView 新增行号封装的通用方法：

 1          /// <summary>
 2         /// 给DataGridView添加行号
 3         /// </summary>
 4         /// <param name="dgv"></param>
 5         /// <param name="e"></param>
 6         public static void DgvRowPostPaint(DataGridView dgv, DataGridViewRowPostPaintEventArgs e)
 7         {
 8             try
 9             {
10                 //添加行号 
11                 SolidBrush v_SolidBrush = new SolidBrush(dgv.RowHeadersDefaultCellStyle.ForeColor);
12                 int v_LineNo = 0;
13                 v_LineNo = e.RowIndex + 1;
14                 string v_Line = v_LineNo.ToString();
15                 e.Graphics.DrawString(v_Line, e.InheritedRowStyle.Font, v_SolidBrush, e.RowBounds.Location.X + 15, e.RowBounds.Location.Y + 5);
16             }
17             catch (Exception ex)
18             {
19                 MessageBox.Show("添加行号时发生错误，错误信息：" + ex.Message, "操作失败");
20             }
21         }

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);