在Winforms中控制自动完成的标签？

using System;
using System.Windows.Forms;

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

            // 设置自动完成模式
            textBox1.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
            textBox1.AutoCompleteSource = AutoCompleteSource.CustomSource;

            // 添加自动完成数据源
            var dataSource = new AutoCompleteStringCollection();
            dataSource.AddRange(new[] { "apple", "banana", "cherry", "date", "fig", "grape" });
            textBox1.AutoCompleteCustomSource = dataSource;
        }
    }
}