怎样在datagrid中行头灰色列显示行号？？

Question

private void dataGridOrder_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
int row =1;  
int y = 0;
                            //dS_GoodsOrder是dataSet
int count =this.dS_GoodsOrder.Tables[0].Rows.Count; 

while( row <= count)  
{ 
//get & draw the header text... 
 
string text = string.Format("  {0}", row);
                                     //dataGridOrder是dataGrid
y = this.dataGridOrder.GetCellBounds(row - 1, 0).Y + 2;
 
e.Graphics.DrawString(text,this.dataGridOrder.Font, new SolidBrush(Color.Black), 4, y); 

row ++;  
}  }

Answer 1

private void dataGrid1_Paint(object sender, PaintEventArgs e)
{
DataTable dt = (DataTable)dataGrid1.DataSource;
if(dt==null || dt.Rows.Count <=0 ) return;
int row=0;
int y=0;
int i=dt.Rows.Count;
while(row<i)
{
string text=string.Format(" {0}",row+1);
y=this.dataGrid1.GetCellBounds(row,0).Y+2;
e.Graphics.DrawString(text,this.dataGrid1.Font ,new SolidBrush(Color.Black), 4, y);
row++;
}
}

Answer 2

在 ItemDataBound事件中 将行号加入就可以