C# DataGridView列编辑控件显示问题

Question

各位高手, 我在调整界面布局时，遇到这样一个问题， 在datagridView中有一个日期列，一个数字列，当我分别点击该列，会分别出现一个dateTimePicker, NumbericUpDown控件进行编辑。 我调整布局，将该dataGridView放入一个TableLayoutPanel后，这两个编辑控件就不出来了。不知何原因，寻求帮助，谢谢！

下面是代码
private void dataGridView_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
{
if (e.RowIndex= this.dataGridView.RowCount) return;
// 设置坐标

if (e.ColumnIndex == 2)
{
Rectangle cellRectange = this.dataGridView.GetCellDisplayRectangle(e.ColumnIndex, e.RowIndex, false);
this.datePicker.Left = this.dataGridView.Left + cellRectange.X;
this.datePicker.Top = this.dataGridView.Top + cellRectange.Y;
this.datePicker.Width = cellRectange.Width;
this.datePicker.Height = cellRectange.Height;

            // 值  
            if (this.dataGridView.Rows[e.RowIndex].Cells[e.ColumnIndex].Value == null || this.dataGridView.Rows[e.RowIndex].Cells[e.ColumnIndex].Value.ToString() == "")
            {
                this.datePicker.Value = DateTime.Now;
                this.datePicker.Visible = true;
            }
            else
            {
                this.datePicker.Value = Convert.ToDateTime(this.dataGridView.Rows[e.RowIndex].Cells[e.ColumnIndex].Value);
                this.datePicker.Visible = true;
            }
        }

        else if (e.ColumnIndex == 5)
        {
            Rectangle cellRectange = this.dataGridView.GetCellDisplayRectangle(e.ColumnIndex, e.RowIndex, false);
            this.numUpDown.Left = this.dataGridView.Left + cellRectange.X;
            this.numUpDown.Top = this.dataGridView.Top + cellRectange.Y;
            this.numUpDown.Width = cellRectange.Width;
            this.numUpDown.Height = cellRectange.Height;
            // 值  
            if (this.dataGridView.Rows[e.RowIndex].Cells[e.ColumnIndex].Value == null || this.dataGridView.Rows[e.RowIndex].Cells[e.ColumnIndex].Value.ToString() == "")
            {
                this.numUpDown.Value = 0;
                this.numUpDown.Visible = true;
            }
            else
            {
                this.numUpDown.Value = (int)this.dataGridView.Rows[e.RowIndex].Cells[e.ColumnIndex].Value;
                this.numUpDown.Visible = true;
            }
        }

Answer 1

1）是不是当放入TableLayoutPanel后，在选则的时候，选中的是TableLayoutPanel。
2）可以试试先去掉TableLayoutPanel，看看有什么现象。