Auto Generate row number in DataGridView.

Using the Below code you can auto generate the row number in the GridView, you just have to write a method taking the GridView as parameter.

public void AutoGenerateRowNumber(DataGridView gridView)
{
   if (gridView != null)
   {
        for (int i = 0; (i <= (gridView.Rows.Count - 2)); i++)
        {
             dataGridView.Rows[i].HeaderCell.Value = string.Format((i + 1).ToString(), "0");
        }
    }
}