多线程和单线程的简单代码
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace ThreadEx101
{
/// <summary>
/// 单线程程序
/// </summary>
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void btnStart_Click(object sender, EventArgs e)
{
for (int index = 0; index < 100000; index++)
{
this.lstTest.Items.Add(string.Format("Item {0}", index));
}
}

private void btnLook_Click(object sender, EventArgs e)
{
MessageBox.Show(string.Format("ListBox中一共有{0}项", this.lstTest.Items.Count));
}
}
}


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; //引入多线程命名空间

namespace ThreadEx101
{
/// <summary>
/// 多线程程序
/// </summary>
public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();
}

private void btnStart_Click(object sender, EventArgs e)
{
ThreadStart threadStart = new ThreadStart(AddItem);

Thread thread = new Thread(threadStart); //声明一个线程
thread.Start(); //启动线程
}

public void AddItem()
{
for (int index = 0; index < 100000; index++)
{
this.lstTest.Items.Add(string.Format("Item {0}", index));
}
}

private void btnLook_Click(object sender, EventArgs e)
{
MessageBox.Show(string.Format("ListBox中一共有{0}项", this.lstTest.Items.Count));
}
}
}