UI Thread

ui_thread.cs

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

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

        private void btn_NewThread_Click(object sender, EventArgs e)
        {
            var th = new System.Threading.Thread(CheckStatusInNewThread);
            th.Name = "StatusCheckThread";
            th.Start();
        }

        private void CheckStatusInNewThread()
        {
            // 禁用按钮
            this.btn_NewThread.Invoke(new Action(() =>
            {
                this.btn_NewThread.Enabled = false;
            }));

            // 开始轮询检查
            for (int i = 0; i < 5; i++)
            {
                this.textBox1.Invoke(new Action(() =>
                {
                    this.textBox1.Text = "正在进行第 " + i.ToString() + " 次检查...";
                }));
                // 每次检查 Sleep 1s
                System.Threading.Thread.Sleep(1000);
            }

            // 启用按钮
            this.btn_NewThread.Invoke(new Action(() =>
            {
                this.btn_NewThread.Enabled = true;
            }));
        }
    }
}