C# 在datagridview中的单元格中加入button按钮

private void dgv_XiaoShouChuKuMingXi_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            this.dgv_XiaoShouChuKuMingXi.Controls.Clear();//移除所有控件 
            if (e.ColumnIndex.Equals(this.dgv_XiaoShouChuKuMingXi.Columns["出品编码"].Index))//判断单元格是否是"出品编码"列？ 
            {
                System.Windows.Forms.Button btn = new System.Windows.Forms.Button();//创建Buttonbtn 
                btn.Text = "···";//设置button文字 
                btn.Font = new System.Drawing.Font("Arial", 8,FontStyle.Bold);//设置文字格式 
                btn.FlatStyle = FlatStyle.Popup;
                btn.Visible = true;//设置控件允许显示
                btn.Width = this.dgv_XiaoShouChuKuMingXi.GetCellDisplayRectangle(e.ColumnIndex,e.RowIndex, true).Height + 4;//获取单元格高并设置为btn的宽 
                btn.Height = this.dgv_XiaoShouChuKuMingXi.GetCellDisplayRectangle(e.ColumnIndex,e.RowIndex, true).Height;//获取单元格高并设置为btn的高
                btn.Click += new EventHandler(btn_Click);//为btn添加单击事件
                this.dgv_XiaoShouChuKuMingXi.Controls.Add(btn);//dataGridView1中添加控件btn
                btn.Location = new System.Drawing.Point(((this.dgv_XiaoShouChuKuMingXi.GetCellDisplayRectangle(e.ColumnIndex, e.RowIndex, true).Right) -
                        (btn.Width)), this.dgv_XiaoShouChuKuMingXi.GetCellDisplayRectangle(e.ColumnIndex, e.RowIndex, true).Y);//设置btn显示位置 
            }
        }