为DataGridView添加行序号

        #region  添加行序号
        /// <summary>
        /// 添加行序号
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void dgvContact_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)
        {
            dgvContact.RowHeadersWidth = 50;
            dgvContact.TopLeftHeaderCell.Value = "序号";
            for (int i = 1; i < dgvContact.Rows.Count; i++)
            {
                dgvContact.Rows[i - 1].HeaderCell.Value = i.ToString();
            }
        }
        #endregion