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 _01_摇奖机
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            CheckForIllegalCrossThreadCalls = false;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            while (true)
            {

                Random r = new Random();
                label1.Text = r.Next(0, 10).ToString();
                label2.Text = r.Next(0, 10).ToString();
                label3.Text = r.Next(0, 10).ToString();
                
                Thread.Sleep(1000);
                
            }


        }

        private void button2_Click(object sender, EventArgs e)
        {
           
            Thread th = new Thread(() =>
            {
                Random r = new Random();
                while (true)
                {

                    label1.Text = r.Next(0, 10).ToString();
                    label2.Text = r.Next(0, 10).ToString();
                    label3.Text = r.Next(0, 10).ToString();

                    Thread.Sleep(1000); 
                }
            });
            th.IsBackground = true;
            th.Start();
        }
    }
}

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

namespace _02_文件拷贝
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            //01 创建 线程
            Thread th = new Thread(() =>
            {
                //进行文件的读写操作
                //01-01 读读读
                using (FileStream fsReader = new FileStream("2015-04-14基础加强1.rar",FileMode.Open))
                {
                    //01-02 写写写
                    using (FileStream fsWrite = new FileStream( "a.rar",FileMode.Create))
                    {
                        long count = fsReader.Length;
                        long currentCount = 0;
                        //设置每次读取的长度
                        byte[] bs = new byte[1024 * 1024];
                        int len;
                        while ((len = fsReader.Read(bs,0,bs.Length))>0)
                        {
                            currentCount += len;
                            progressBar1.Invoke(
                                new Action<int>((xh) => { progressBar1.Value = http://www.mamicode.com/xh; }), (int)(currentCount/count)*100
                                );
                            fsWrite.Write(bs,0,len);
                        }
                    }
                }
            });
            //02 设置为后台线程 
            th.IsBackground = true;
            //03 启动
            th.Start();
        }
    }
}