如何使C#中的组合框像按钮一样工作

using System;
using System.Windows.Forms;

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

        private void Form1_Load(object sender, EventArgs e)
        {
            // 设置组合框的样式为下拉按钮
            comboBox1.DropDownStyle = ComboBoxStyle.DropDownButton;
        }

        private void comboBox1_Click(object sender, EventArgs e)
        {
            // 处理组合框按钮的点击事件
            MessageBox.Show("ComboBox button clicked!");
        }
    }
}