c#多线程操作测试（阻塞线程，结束任务）

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

namespace WindowsFormsApplication1
{
    public partial class Form5 : Form
    {
        public Form5()
        {
            InitializeComponent();
        }
        string aa = "aaaa";
        bool bl = false;
        private object syncstate = new object();
        TaskScheduler scheduler = null;
        System.Timers.Timer tmPulse = new System.Timers.Timer();//位置刷新
        System.Timers.Timer tmPulse1 = new System.Timers.Timer();//位置刷新
        Thread t;
        Thread t1;
        Thread t2;
        private void Form5_Load(object sender, EventArgs e)
        {
            scheduler = TaskScheduler.FromCurrentSynchronizationContext();
            t = new Thread(new ThreadStart(SetData));
            t.IsBackground = true;
            t.Start();

            t1 = new Thread(new ThreadStart(Set1));
            t1.IsBackground = true;
            t1.Start();

            t2 = new Thread(new ThreadStart(Set2));
            t2.IsBackground = true;
            t2.Start();
        }

        void Set()
        {
            tmPulse.Interval = 200;
            tmPulse.AutoReset = true;//设置是执行一次（false）还是一直执行(true)；  位置刷新
            tmPulse.Start();
            tmPulse.Elapsed += (o, a) =>
            {
                SetData();
            };
            tmPulse.Enabled = true;

            tmPulse1.Interval = 200;
            tmPulse1.AutoReset = true;//设置是执行一次（false）还是一直执行(true)；  位置刷新
            tmPulse1.Start();
            tmPulse1.Elapsed += (o, a) =>
            {
                Set1();
            };
            tmPulse1.Enabled = true;


        }
        void SetData()
        {
            while (true)
            {
                
                for (int i = 0; i < 10; i++)
                {
                    if (i == 2)
                    {
                        ShowMessage("执行结果，是否成功?", "结果确认", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
                    }
                    Task.Factory.StartNew(() =>
                    {
                        lock (syncstate)
                        {
                            textBox1.Text += ("测试:" + aa + "   " + i + "
");
                            textBox1.SelectionStart = textBox1.Text.Length;
                            this.textBox1.ScrollToCaret();
                        }
                    }, CancellationToken.None, TaskCreationOptions.None, scheduler);
                    Thread.Sleep(1000);
                    aa = "第一个测试";
                    if (i == 5)
                    {


                    }
                }
                return;
            }
        }
        void Set1()
        {
            while (true)
            {
           
                for (int i = 0; i < 10; i++)
                {
                    Task.Factory.StartNew(() =>
                    {
                        lock (syncstate)
                        {
                            textBox1.Text += ("设置1:" + aa + "   " + i + "
");
                            textBox1.SelectionStart = textBox1.Text.Length;
                            this.textBox1.ScrollToCaret();
                        }
                    }, CancellationToken.None, TaskCreationOptions.None, scheduler);
                    aa = "第1个设置" + i;
                    Thread.Sleep(500);
                }
                Task.Factory.StartNew(() =>
                {
                    lock (syncstate)
                    {
                        textBox1.Text += ("设置1:完成
");
                        textBox1.SelectionStart = textBox1.Text.Length;
                        this.textBox1.ScrollToCaret();
                    }
                }, CancellationToken.None, TaskCreationOptions.None, scheduler);
                return;
            }
        }
        void Set2()
        {
            while (!bl)
            {
                for (int i = 0; i < 10; i++)
                {
                    Task.Factory.StartNew(() =>
                    {
                        lock (syncstate)
                        {
                            textBox1.Text += ("设置2:" + aa + "   " + i + "
");
                            textBox1.SelectionStart = textBox1.Text.Length;
                            this.textBox1.ScrollToCaret();
                        }
                    }, CancellationToken.None, TaskCreationOptions.None, scheduler);
                    aa = "第2个设置" + i;
                    Thread.Sleep(500);
                }
            }
        }
        private void button1_Click(object sender, EventArgs e)
        {
            bl = true;
        }

        public DialogResult ShowMessage(string text, string caption, MessageBoxButtons buttons, MessageBoxIcon icon)
        {
            var dr = new DialogResult();
            try
            {
                var tmp = this.Invoke(new MessageBoxShow(MessageBoxShowF), new object[] { text, caption, buttons, icon });
                if (tmp != null)
                {
                    dr = (DialogResult)tmp;
                }
            }
            catch
            {

            }
            return dr;
        }
        delegate DialogResult MessageBoxShow(string text, string caption, MessageBoxButtons buttons, MessageBoxIcon icon);
        DialogResult MessageBoxShowF(string text, string caption, MessageBoxButtons buttons, MessageBoxIcon icon)
        {

            var dr = MessageBox.Show(text, caption, buttons, icon);
            return dr;
        }

        private void Form5_FormClosed(object sender, FormClosedEventArgs e)
        {
            t.Abort();
            t.Join();
            
            t1.Abort();
            t1.Join();
            t2.Abort();
            t2.Join();
        }
    }
}