RowPrePaint 事件死循环(不停的刷新)问题 解决

  private void dgv_RowPrePaint(object sender, DataGridViewRowPrePaintEventArgs e)
        {
            if (infos[e.RowIndex].HaveDetails == "不存在")  //此条件会导致无限的刷新
            {
                dgv.Rows[e.RowIndex].Cells[11] = new DataGridViewTextBoxCell();
                dgv.Rows[e.RowIndex].Cells[11].Value = "无";

            }
        }

原因: new DataGridViewTextBoxCell() 程序导致 dgv_RowPrePaint事件重绘,所以就进入了无休止的 刷新
正确代码 

  private void dgv_RowPrePaint(object sender, DataGridViewRowPrePaintEventArgs e)
        {
            
            if (infos[e.RowIndex].HaveDetails == "不存在"&& dgv[11, e.RowIndex].GetType() == typeof(DataGridViewButtonCell))
            {
                dgv.Rows[e.RowIndex].Cells[11] = new DataGridViewTextBoxCell();
                dgv.Rows[e.RowIndex].Cells[11].Value = "无";

            }
        }

附添加按钮程序

   DataGridViewButtonColumn btn = new DataGridViewButtonColumn();
            btn.Name = "Details";
            btn.HeaderText = "查看详情";
            btn.DefaultCellStyle.NullValue = "";
            btn.Width = 45;
            dgv.Columns.Add(btn); 

按钮点击事件

    private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
        {
            int index = dataGridView1.SelectedCells[0].RowIndex;
            var id = filesdt.Rows[index][0].ToString();

            if (this.dataGridView1.Columns[e.ColumnIndex].Name == "down")
            {
              
            }
            else if (this.dataGridView1.Columns[e.ColumnIndex].Name == "del")
            {

            }
        }