datagridview 显示行号、插入多行、删除、插入、清空行

privatevoiddgv_BBQ_RowStateChanged(objectsender,DataGridViewRowStateChangedEventArgse)

        {

            e.Row.HeaderCell.Value =string.Format("{0}", e.Row.Index + 1);

        }

       privatevoid删除行ToolStripMenuItem_Click(objectsender,EventArgse)

        {

            dgv_BBQ.Rows.Remove(dgv_BBQ.SelectedRows[0]);

            dgv_BBQ.Refresh();

        }

       privatevoid清空ToolStripMenuItem_Click(objectsender,EventArgse)

        {

            dgv_BBQ.Rows.Clear();

            dgv_BBQ.Refresh();

        }

       privatevoid插入行ToolStripMenuItem_Click(objectsender,EventArgse)

        {

            dgv_BBQ.Rows.Insert(dgv_BBQ.CurrentRow.Index,"");

            dgv_BBQ.Refresh();

        }