DataGridView add line numbers

1  // Select a DataGridView RowPostPaint generating method 
2  
. 3  
. 4  
. 5   Private  void dgvStudentList_RowPostPaint ( Object SENDER, DataGridViewRowPostPaintEventArgs E)
 . 6          {
 . 7            DataGridViewStyle.DgvRowPostPaint ( the this .dgvStudentList, E)
 . 8          }
 . 9  
10  
. 11  
12 is  
13 is  ///  <Summary> 
14          /// to add DataGridView line number
 15          ///  </ Summary> 
16          ///  <param name = "DGV"> </ param> 
. 17          ///  <param name = "E"> </ param>
18         public static void DgvRowPostPaint(DataGridView dgv, DataGridViewRowPostPaintEventArgs e)
19         {
20             try
21             {
22                 //添加行号 
23                 SolidBrush v_SolidBrush = new SolidBrush(dgv.RowHeadersDefaultCellStyle.ForeColor);
24                 int v_LineNo = 0;
25                 v_LineNo = e.RowIndex + 1;
26                 string v_Line = v_LineNo.ToString();
27                 e.Graphics.DrawString (v_Line, e.InheritedRowStyle.Font, v_SolidBrush, e.RowBounds.Location.X + 15 , + e.RowBounds.Location.Y . 5 );
 28              }
 29              the catch (Exception EX)
 30              {
 31 is                  the MessageBox. show ( " error, an error message occurs when adding the line number: " + ex.Message, " operation failed " );
 32              }
 33          }