P177线程

1.通过进程去打开应用程序

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace _02线程和进程的复习
{
    class Program
    {
        static void Main(string[] args)
        {

            //通过进程去打开应用程序
            //Process.getprocesses
            //Process.Start("notepad");
            //Process.Start("iexplore", "http://www.baidu.com");



            //通过进程去打开指定的文件
            //ProcessStartInfo psi = new ProcessStartInfo(@"C:\Users\SpringRain\Desktop\1、播放音乐下一曲.wmv");
            //Process p = new Process();
            //p.StartInfo = psi;
            //p.Start();
            //Console.ReadKey();


            //进程和线程的关系? 一个进程包含多个线程

            //前台  后台
        }
    }
}

 

2.通过进程去打开指定的文件

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace _02线程和进程的复习
{
    class Program
    {
        static void Main(string[] args)
        {

            //通过进程去打开应用程序
            //Process.getprocesses
            //Process.Start("notepad");
            //Process.Start("iexplore", "http://www.baidu.com");



            //通过进程去打开指定的文件
            //ProcessStartInfo psi = new ProcessStartInfo(@"C:\Users\SpringRain\Desktop\1、播放音乐下一曲.wmv");
            //Process p = new Process();
            //p.StartInfo = psi;
            //p.Start();
            //Console.ReadKey();


            //进程和线程的关系? 一个进程包含多个线程

            //前台  后台
        }
    }
}

3.进程和线程的关系

　　一个进程包含多个线程

　　使用后天线程，解决假死问题

4.thread类

　　①start()启动线程

　　②Abort()终止线程，终止完后不能再Start

　　③Thread.Sleep(1)静态方法，可以使当前线程停止一段时间运行

5.防止界面假死问题

　　思路：创建一个线程，并设为后台线程，传参数

private void button1_Click(object sender, EventArgs e)
        {
            Thread th = new Thread(Test); //创建一个线程
            th.IsBackground = true;  //设为后台线程
            th.Start("123");//传参数
            //Test();
        }


        private void Test(object s)//必须为object类型
        {
            string ss = (string)s; //object转为string
            for (int i = 0; i < 10000; i++)
            {
                Console.WriteLine(i);
            }
        }

 6.摇奖机程序

　　①click事件

bool b = false;
private void button1_Click(object sender, EventArgs e)
        {
            if (b == false)
            {
                b = true;
                button1.Text = "停止";
                Thread th = new Thread(PlayGame);
                th.IsBackground = true;
                th.Name = "新线程";
               // th.
                th.Start();
            }
            else//b==true
            {
                b = false;
                button1.Text = "开始";
            }
            //PlayGame();
        }

　　②随机数生成

private void PlayGame()
        {
            Random r = new Random();
            while (b)
            {
                label1.Text = r.Next(0, 10).ToString();
                label2.Text = r.Next(0, 10).ToString();
                label3.Text = r.Next(0, 10).ToString();
            }
        }

　　③Tip：异常处理：线程间操作异常

private void Form1_Load(object sender, EventArgs e)
{
Control.CheckForIllegalCrossThreadCalls = false;
}

　　④所有代码

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 _05_摇奖机应用程序
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        bool b = false;
        private void button1_Click(object sender, EventArgs e)
        {
            if (b == false)
            {
                b = true;
                button1.Text = "停止";
                Thread th = new Thread(PlayGame);
                th.IsBackground = true;
                th.Name = "新线程";
               // th.
                th.Start();
            }
            else//b==true
            {
                b = false;
                button1.Text = "开始";
            }
            //PlayGame();
        }
        private void PlayGame()
        {
            Random r = new Random();
            while (b)
            {
                label1.Text = r.Next(0, 10).ToString();
                label2.Text = r.Next(0, 10).ToString();
                label3.Text = r.Next(0, 10).ToString();
            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            Control.CheckForIllegalCrossThreadCalls = false;
        }
    }
}

namespace _05_摇奖机应用程序
{
    partial class Form1
    {
        /// <summary>
        /// 必需的设计器变量。
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// 清理所有正在使用的资源。
        /// </summary>
        /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows 窗体设计器生成的代码

        /// <summary>
        /// 设计器支持所需的方法 - 不要
        /// 使用代码编辑器修改此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {
            this.label1 = new System.Windows.Forms.Label();
            this.label2 = new System.Windows.Forms.Label();
            this.label3 = new System.Windows.Forms.Label();
            this.button1 = new System.Windows.Forms.Button();
            this.SuspendLayout();
            // 
            // label1
            // 
            this.label1.AutoSize = true;
            this.label1.Location = new System.Drawing.Point(111, 137);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(41, 12);
            this.label1.TabIndex = 0;
            this.label1.Text = "label1";
            // 
            // label2
            // 
            this.label2.AutoSize = true;
            this.label2.Location = new System.Drawing.Point(246, 137);
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size(41, 12);
            this.label2.TabIndex = 1;
            this.label2.Text = "label2";
            // 
            // label3
            // 
            this.label3.AutoSize = true;
            this.label3.Location = new System.Drawing.Point(396, 136);
            this.label3.Name = "label3";
            this.label3.Size = new System.Drawing.Size(41, 12);
            this.label3.TabIndex = 2;
            this.label3.Text = "label3";
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(398, 297);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(75, 23);
            this.button1.TabIndex = 3;
            this.button1.Text = "开始";
            this.button1.UseVisualStyleBackColor = true;
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(626, 456);
            this.Controls.Add(this.button1);
            this.Controls.Add(this.label3);
            this.Controls.Add(this.label2);
            this.Controls.Add(this.label1);
            this.Name = "Form1";
            this.Text = "Form1";
            this.Load += new System.EventHandler(this.Form1_Load);
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.Label label2;
        private System.Windows.Forms.Label label3;
        private System.Windows.Forms.Button button1;
    }
}