[analyze]

کد:

foreach (DataGridViewRow row in dataGridView1.Rows)
            {
                if (row.IsNewRow) continue;
                row.HeaderCell.Value = (row.Index+1).ToString();
            }
           //dataGridView1.AutoResizeRowHeadersWidth(DataGridViewRowHeadersWidthSizeMode.AutoSizeToAllHeaders);
    aGrid1.RowHeadersWidth = 60;