《关于多线程执行显示进度条的实例!》--更接近于实战的实例

《关于多线程执行显示进度条的实例!》找不到原创文章链接了，但是真的很感谢这位大神的这篇文章，我终于搞出来多线程执行显示进度条的窗口了，现在我把自己实战的代码贴上来，实战的源码更长，但是为了简单易懂，突出重点，我把自己那群绕来绕去的代码简化成了几句，只为总结一下思路。

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 窗体上的进度条

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

//线程开始的时候调用的委托

private delegate void maxValueDelegate(int maxValue);

//线程执行中调用的委托

private delegate void nowValueDelegate(int nowValue);

private delegate void 实时信息委托(实时信息 msg);

private void button1_Click(object sender, EventArgs e)

{

progressBar1.Visible = true;

ThreadMethod method = new ThreadMethod();

//先订阅一下事件

method.threadStartEvent += new EventHandler(method_threadStartEvent);

method.threadEvent += new EventHandler(method_threadEvent);

method.threadEndEvent += new EventHandler(method_threadEndEvent);

method.thread实时信息 += new EventHandler(method_thread实时信息);

Thread thread = new Thread(new ThreadStart(method.runMethod));

thread.Start();

}

private void method_thread实时信息(object sender, EventArgs e)

{

实时信息 msg = (实时信息)sender;

实时信息委托 now = new 实时信息委托(实时信息显示方法);

Invoke(now, msg);

}

private void 实时信息显示方法(实时信息 msg)

{

label3.Text = msg.sum.ToString();

label4.Text = msg.current.ToString();

}

/// <summary>

/// 线程完成事件

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

void method_threadEndEvent(object sender, EventArgs e)

{

MessageBox.Show("我完成啦!");

}

/// <summary>

/// 线程执行中的事件,设置进度条当前进度

/// 但是我不能直接操作进度条,需要一个委托来替我完成

/// </summary>

/// <param name="sender">ThreadMethod函数中传过来的当前值</param>

/// <param name="e"></param>

void method_threadEvent(object sender, EventArgs e)

{

int nowValue = Convert.ToInt32(sender);

nowValueDelegate now = new nowValueDelegate(setNow);

Invoke(now, nowValue);

}

/// <summary>

/// 线程开始事件,设置进度条最大值

/// 但是我不能直接操作进度条,需要一个委托来替我完成

/// </summary>

/// <param name="sender">ThreadMethod函数中传过来的最大值</param>

/// <param name="e"></param>

void method_threadStartEvent(object sender, EventArgs e)

{

int maxValue = Convert.ToInt32(sender);

maxValueDelegate max = new maxValueDelegate(setMax);

Invoke(max, maxValue);

}

/// <summary>

/// 我被委托调用,专门设置进度条最大值的

/// </summary>

/// <param name="maxValue"></param>

private void setMax(int maxValue)

{

progressBar1.Maximum = maxValue;

label1.Text = maxValue.ToString();

}

/// <summary>

/// 我被委托调用,专门设置进度条当前值的

/// </summary>

/// <param name="nowValue"></param>

private void setNow(int nowValue)

{

progressBar1.Value = nowValue;

label2.Text = nowValue.ToString();

if (progressBar1.Value == progressBar1.Maximum - 1)

{

progressBar1.Visible = false;

}

}

}

/// <summary>

/// 线程处理方法

/// </summary>

public class ThreadMethod

{

/// <summary>

/// 线程开始事件

/// </summary>

public event EventHandler threadStartEvent;

/// <summary>

/// 线程执行时事件

/// </summary>

public event EventHandler threadEvent;

/// <summary>

/// 线程结束事件

/// </summary>

public event EventHandler threadEndEvent;

public event EventHandler thread实时信息;

public void runMethod()

{

int cont = 100000; //执行多少次

threadStartEvent.Invoke(100, new EventArgs());//通知主界面,我开始了,count用来设置进度条的最大值

double t1 = 0, t2 = 0;

int jindu = 0, temp = 0;

实时信息 msg = new 实时信息();

for (int i = 0; i < cont; i++)

{

msg.current = i + 1;

msg.sum = cont;

thread实时信息.Invoke(msg, new EventArgs());

t1 = i;

t2 = cont;

if (t1 > 0)

{

jindu = (int)(t1 / t2 * 100);

}

if (jindu == temp + 1)

{

threadEvent.Invoke(jindu, new EventArgs());//通知主界面我正在执行,i表示进度条当前进度

Thread.Sleep(100);//休息100毫秒,模拟执行大数据量操作

temp = jindu;

}

}

threadEndEvent.Invoke(new object(), new EventArgs());//通知主界面我已经完成了

}

}

public class 实时信息

{

public int current = 0;

public int sum = 0;

}

}