在dataGridView中显示combobox

 全局中定义：

        bool endload;
        ComboBox cmbcasType = new ComboBox();

 

加载窗体事件：

            endload = false;
            cmbcasType.Visible = false;//初始化为不显示
            dataGridView1.Controls.Add(cmbcasType);//向在dataGridView中添加这个控件
            cmbcasType.DropDownStyle = ComboBoxStyle.DropDownList;//设置下拉列表格式
            this.cmbcasType.SelectedIndexChanged += new System.EventHandler(this.cmbcasType_SelectedIndexChanged);//添加combobox事件
            endload = true;

 

combobox事件：

private void cmbcasType_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (!endload) return;
            dataGridView1.CurrentCell.Value = cmbcasType.Text;
            dataGridView1.CurrentRow.Cells[6].Value = cmbcasType.SelectedValue.ToString();
            cmbcasType.Visible = false;
        }

 

加载数据：

                cmbcasType.DataSource = lstdictcas;
                cmbcasType.DisplayMember = "chName";
                cmbcasType.ValueMember = "code";

 

 

在dataGridView中显示：

 

private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            if (e.RowIndex == -1) return;
            if (e.ColumnIndex == 4)
            {
               
                Rectangle R = dataGridView1.GetCellDisplayRectangle(e.ColumnIndex, e.RowIndex, false);//得到单元格大小
                cmbcasType.SetBounds(R.X, R.Y, R.Width, R.Height);//设置combobox大小
                cmbcasType.Visible = true;
                return;

            }
            cmbcasType.Visible = false;
        }