使用后台线程中的文本文件数据填充和显示winform

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.IO;
using System.Threading;
using System.Windows.Forms;

namespace WinFormApp
{
    public partial class MainForm : Form
    {
        private List<string> data; // 存储读取到的数据

        public MainForm()
        {
            InitializeComponent();
        }

        private void btnLoadData_Click(object sender, EventArgs e)
        {
            // 创建后台线程
            BackgroundWorker worker = new BackgroundWorker();
            worker.DoWork += Worker_DoWork;
            worker.RunWorkerCompleted += Worker_RunWorkerCompleted;

            // 启动后台线程
            worker.RunWorkerAsync();
        }

        private void Worker_DoWork(object sender, DoWorkEventArgs e)
        {
            // 在后台线程中读取文本文件数据并填充到data列表中
            data = new List<string>();

            using (StreamReader reader = new StreamReader("data.txt"))
            {
                string line;
                while ((line = reader.ReadLine()) != null)
                {
                    data.Add(line);
                }
            }

            // 模拟耗时操作
            Thread.Sleep(2000);
        }

        private void Worker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            // 在主线程中更新界面上的文本框控件
            txtData.Text = string.Join(Environment.NewLine, data);
        }
    }
}