form1.cs

来自「Visual C#2005程序设计教程」· CS 代码 · 共 28 行

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace WinApp5_7ComboBox
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            cmbBooks.Items.Add(cmbBooks.Text);
        }

        private void button2_Click(object sender, EventArgs e)
        {
            cmbBooks.Text = "";
        }
    }
}