组合框控件

开发平台：
Visual C++

Form1.cs：源码内容
							﻿using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace CombEdit
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            DataTable dtbl = new DataTable();
            dtbl.Columns.Add("Show");
            dtbl.Columns.Add("Value");
            DataRow drow=dtbl.Rows.Add();
            drow["Show"] = "销售部";
            drow["Value"] = "001";
            drow = dtbl.Rows.Add();
            drow["Show"] = "人事部";
            drow["Value"] = "002";
            DataGridViewComboBoxColumn cmb0 = new DataGridViewComboBoxColumn();
            cmb0.Name = "cmb0";
            cmb0.DisplayMember = "Show";
            cmb0.ValueMember = "Value";
            cmb0.DataSource = dtbl;
            dataGridView1.Columns.Add(cmb0);
            dataGridView1.Columns["cmb0"].HeaderText = "系统";
            DataGridViewComboBoxExColumn cmb1 = new DataGridViewComboBoxExColumn();
            cmb1.Name = "cmb1";
            cmb1.DisplayMember = "Show";
            cmb1.ValueMember = "Value";
            cmb1.DataSource = dtbl;
            dataGridView1.Columns.Add(cmb1);
            dataGridView1.Columns["cmb1"].HeaderText = "自定义1";
            DataGridViewComboEditBoxColumn cmb2 = new DataGridViewComboEditBoxColumn();
            cmb2.Name = "cmb2";
            cmb2.DisplayMember = "Show";
            cmb2.ValueMember = "Value";
            cmb2.DataSource = dtbl; 
            dataGridView1.Columns.Add(cmb2);
            dataGridView1.Columns["cmb2"].HeaderText = "自定义2";
            DataGridViewComboEditBoxColumn cmb3 = new DataGridViewComboEditBoxColumn();
            cmb3.Name = "cmb3";
            cmb3.Items.Add("自动添加");
            dataGridView1.Columns.Add(cmb3);
            dataGridView1.Columns["cmb3"].HeaderText = "自动添加";
        }
        private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
        {
            if (e.Control is DataGridViewComboBoxEditingControl)
            {
                DataGridView dgv = (DataGridView)sender;
                if (dgv.CurrentCell.OwningColumn.Name == "cmb0")
                {
                    DataGridViewComboBoxEditingControl cb = (DataGridViewComboBoxEditingControl)e.Control;
                    cb.DropDownStyle = ComboBoxStyle.DropDown;
                }
            }
        }
    }
}

						