Winform的dataGridView中添加序号

      

dataGridView的RowPostPaint事件，双击，吧下面的代考进去，改下dataGridView名字，就ok

 

private void dataGridView1_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e)
        {
            foreach (DataGridViewRow dr in dataGridView1.Rows)
            {
                dr .Cells[0].Value = dr .Index+1;
            }
        }