Winform DataGridView 删除、修改

private int curRow = 0;//鼠标右键得到的当前行号

        #region 激发鼠标事件，显示右键菜单,得到被选中的行的行号,注意第一列被隐藏的情况考虑
        private int showRightMenu(DataGridView dataGridView, ContextMenuStrip contextMenuStrip, DataGridViewCellMouseEventArgs e)
        {
            int curRowTemp = 0;//当前鼠标在DataGridView中的行的位置
            if (e.Button == MouseButtons.Right)
            {
                curRowTemp = e.RowIndex;
                if (curRowTemp < 0 || curRowTemp > dataGridView.Rows.Count)
                {
                    curRowTemp = 0;
                }
                else
                {
                    dataGridView.CurrentCell = dataGridView[1, curRowTemp];
                    dataGridView.ContextMenuStrip = contextMenuStrip;
                }
            }
            return curRowTemp;//返回当前鼠标所在的行的行号
        }
        #endregion
        #region 根据行号，得到DataGridView中该行的某一列的信息
        private Object GetColumeInfo(DataGridView dataGridView, int curRow, int colnum)
        {
            Object info = null;
            info = dataGridView.Rows[curRow].Cells[colnum].Value;
            return info;
        }
        #endregion
        #region 根据行号，设置DataGridView中该行的某一列的信息
        private int SetColumeInfo(DataGridView dataGridView, int curRow, int column, Object info)
        {
            dataGridView.Rows[curRow].Cells[column].Value = info;
            return (int)this.GetColumeInfo(dataGridView, curRow, 0);
        }
        #endregion
        #region 根据行号，删除该行
        private int RemoveRow(DataGridView dataGridView, int curRow)
        {
            int rowID = (int)this.GetColumeInfo(dataGridView, curRow, 0);
            dataGridView.Rows.RemoveAt(curRow);
            System.Console.WriteLine("删除的索引号" + rowID + "删除的行号" + curRow);
            return rowID;
        }
        #endregion