超级大乐透的例子，多线程

超级大乐透规约：“35选5加12选2”

从01-35个号码，选取5个号码作为前区号码

从01-12个号码，选取2个号码作为后期号码

首先建一个Form界面

 

 点击【结束】后，如下图

 

 

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 _19_Games
{
    public partial class frmHappy : Form
    {
        public static readonly object objLock = new object();//官方标准锁
        public CancellationTokenSource cts;
        string[] strBlueBuff = new string[] {
            "01", "02","03","04","05","06", "07","08","09","10",
             "11", "12"
        };
        string[] strRedBuff = new string[] {
            "01", "02","03","04","05","06", "07","08","09","10",
             "11", "12","13","14","15","16","17","18","19","20",
             "21", "22","23","24","25","26","27","28","29","30",
            "31","32","33","34","35"
        };


        public frmHappy()
        {
            InitializeComponent();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            SaveInvok(() =>
            {
                List<Task> tasksList = new List<Task>();
                lblRed1.Text = "00";
                lblRed2.Text = "00";
                lblRed3.Text = "00";
                lblRed4.Text = "00";
                lblRed5.Text = "00";
                lblBlue1.Text = "00";
                lblBlue2.Text = "00";
                btnStart.Text = "进行中...";
                cts = new CancellationTokenSource();
                foreach (var item in this.groupBox1.Controls)
                {
                    if (item is Label)
                    {
                        Label label = (Label)item;
                        if (label.Name.Contains("Blue"))
                        {
                            tasksList.Add(Task.Factory.StartNew(() =>
                           {
                               Console.WriteLine($"==blue={Thread.CurrentThread.ManagedThreadId}===");
                               DoWork(label, strBlueBuff, "Blue");
                           }, cts.Token));
                        }
                        else
                        {
                            tasksList.Add(Task.Factory.StartNew(() =>
                           {
                               Console.WriteLine($"=red=={Thread.CurrentThread.ManagedThreadId}===");
                               DoWork(label, strRedBuff, "Red");
                           }, cts.Token));
                        }
                    }
                }

                //界面都是非0的时候，关闭按钮亮起来
                #region
                //while(true)//死锁了。主线程等子线程更新数据；子线程等主线程来更新
                //{
                //    Thread.Sleep(1000);
                //    if (!IsExist("00") && lblBlue.Text != "00")
                //    {
                //        this.btnStart.Enabled = true;
                //        break;
                //    }
                //}
                Task.Factory.StartNew(() =>
                {
                    while (true)
                    {
                        Console.WriteLine($"==={Thread.CurrentThread.ManagedThreadId}===");
                        if (!IsExist("00", "Blue") && !IsExist("00", "Red"))
                        {
                            this.Invoke(new Action(() => { btnEnd.Enabled = true; }));
                            break;
                        }
                    }
                });
                #endregion

                //所有线程结束的时候，弹出窗体展示数据，两种方式都可以实现
                #region
                //用TaskFactory实现
                //TaskFactory taskFactory = new TaskFactory();
                //taskFactory.ContinueWhenAll(tasksList.ToArray(), arrayItem => ShowNum());

                //用Task实现
                Task.WhenAll(tasksList.ToArray()).ContinueWith(item =>
                {
                    ShowNum();
                    this.Invoke(new Action(() => { btnStart.Text = "开始"; }));
                });//有点装得啊，点击开始的时候，就注册了后续动作
                #endregion
            });
        }
        private void ShowNum()
        {
            MessageBox.Show($"{lblRed1.Text},{lblRed2.Text},{lblRed3.Text},{lblRed4.Text},{lblRed5.Text},{lblBlue1.Text},{lblBlue2.Text}");
        }
        private void DoWork(Label label, string[] strBuf, string strColor)
        {
            while (true)
            {
                if (cts.IsCancellationRequested)
                {
                    break;
                }
                int num = new RandomHelper().GetRandomNumberLong(0, strBuf.Length);
                string strBlue = strBuf[num];
                lock (objLock)
                {
                    if (IsExist(strBlue, strColor))
                    {
                        continue;
                    }
                    this.UpdateNum(label, strBlue);
                }
            }
        }
        private void UpdateNum(Label item, string strBlue)
        {
            if (this.InvokeRequired)
            {
                this.Invoke(new Action(() => { item.Text = strBlue; }));
            }
        }

        private bool IsExist(string strNum, string strColor)
        {
            foreach (var item in this.groupBox1.Controls)
            {
                if (item is Label)
                {
                    Label label = (Label)item;
                    if (label.Name.Contains(strColor) && label.Text.Equals(strNum))
                    {
                        return true;
                    }
                }
            }
            return false;
        }

        private void button2_Click(object sender, EventArgs e)
        {
            SaveInvok(() =>
            {
                if (cts != null)
                {
                    cts.Cancel();
                }
            });
        }
        public static void SaveInvok(Action action)
        {
            try
            {
                action.Invoke();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }
    }
}