Deleted row information cannot be accessed thru the row

Question

Hi

  I am getting this error after dt.delete()

foreach (DataRow row in dt.Rows)
{
    if (ND == (dtCount - 1) - init && (Convert.ToInt32(row[3].ToString().Trim()) < (Convert.ToInt32(HRpl) - 1)))
    {
        row.Delete();
    }
    if (ND == (dtCount - 1) - init && (Convert.ToInt32(row[3].ToString().Trim()) > (Convert.ToInt32(HRpl))))
    {
        row.Delete();
    }
}

Thanks