在datagridview里添加自定义控件列

1、定义一个控件如：commbox

  

//定义下拉列表框、隐藏控件、在datagridview中添加控件
       private ComboBox datacmb=new ComboBox();
      datacmb.Visible = false;
      this.dataGridView1.Controls.Add(datacmb);

2、添加datagridview的CurrentCellChanged事件

  

private void dataGridView1_CurrentCellChanged(object sender, EventArgs e)
        {
            try
            {
                if (this.dataGridView1.CurrentCell.ColumnIndex == 4)
                {
                    Rectangle rec = this.dataGridView1.GetCellDisplayRectangle(dataGridView1.CurrentCell.ColumnIndex, dataGridView1.CurrentCell.RowIndex, false);
                    datacmb.Left = rec.Left;
                    datacmb.Top = rec.Top;
                    datacmb.Width = rec.Width;
                    datacmb.Height = rec.Height;
                    datacmb.Visible = true;
                }
                else
                {
                    datacmb.Visible = false;
                }
            }
            catch
            {
                //MessageBox.Show(ex.Message);
            }
        }