System;

//代码来自ACCP4.0教程

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

//using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Threading;

namespace Thread_demos

{

public partial class frmMain : Form

{

public frmMain()

{

InitializeComponent();

}

private void btnCalculate_Click(object sender, EventArgs e)

{

txtOutput.Text = "0";

lstMessage.Items.Clear();

int threadNumber = Convert.ToInt32(this.txtThreadNumber.Text);

for (int i = 1; i <=threadNumber; i++)

{

ThreadStart threadStar = new ThreadStart(Add);

Thread thread = new Thread(threadStar);

thread.Name = i.ToString();

thread.Start();

}

}

private void Add()

{

DateTime beginTime = DateTime.Now;

long minValue = long.Parse(txtMinValue.Text);

long maxValue = long.Parse(txtMaxValue.Text);

int threadNumber = Convert.ToInt32(txtThreadNumber.Text);

int threadOrder = Convert.ToInt32(Thread.CurrentThread.Name);

long step = (maxValue - minValue + 1) / threadNumber;

long beginValue = minValue + step * (threadOrder - 1);

long endValue = beginValue +step;

long result = 0;

for (long i = beginValue; i < endValue; i++)

{

result += i;

}

lock (this)

{

long sum = long.Parse(txtOutput.Text);

sum += result;

txtOutput.Text = sum.ToString();

}

DateTime endTime = DateTime.Now;

TimeSpan timeSpan = endTime - beginTime;

string message = "线程" + Thread.CurrentThread.Name + ": "

+ beginValue.ToString() + "到" + endValue.ToString()

+ ",耗时：" + timeSpan.TotalMilliseconds.ToString() + "毫秒";

this.lstMessage.Items.Add(message);

Thread.CurrentThread.Abort();

}

}

}