WinForm中BackgroundWorker控件用法简单实例

这篇文章主要介绍了WinForm中BackgroundWorker控件用法,以一个简单实例形式分析了BackgroundWorker控件的定义、设置及使用技巧,具有一定参考借鉴价值,需要的朋友可以参考下

本文实例讲述了WinForm中BackgroundWorker控件用法。分享给大家供大家参考。具体如下：

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									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 WinFormApp

									{

									 public partial class Form2 : Form

									 {

									  BackgroundWorker backgroundWorker;

									  int i = 0;

									  int len = 100;

									  public Form2()

									  {

									   InitializeComponent();

									   backgroundWorker = new BackgroundWorker();

									   backgroundWorker.DoWork += new DoWorkEventHandler(backgroundWorker_DoWork);

									   backgroundWorker.RunWorkerCompleted += new RunWorkerCompletedEventHandler(backgroundWorker_RunWorkerCompleted);

									   backgroundWorker.ProgressChanged += new ProgressChangedEventHandler(backgroundWorker_ProgressChanged);

									   backgroundWorker.WorkerReportsProgress = true;

									  }

									  void backgroundWorker_ProgressChanged(object sender, ProgressChangedEventArgs e)

									  {

									   ThreadInvoke.SetMethodInvokeValue(label2, "进度:" + e.ProgressPercentage.ToString());

									   //progressBar.Value = e.ProgressPercentage;

									  }

									  void backgroundWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)

									  {

									   ThreadInvoke.SetMethodInvokeValue(label3, "结果:completed");

									  }

									  void backgroundWorker_DoWork(object sender, DoWorkEventArgs e)

									  {

									   ThreadInvoke.SetMethodInvokeValue(label3, "结果:start");

									   while (i < len)

									   {

									    i++;

									    System.Threading.Thread.Sleep(100);

									    ThreadInvoke.SetMethodInvokeValue(label1, "工作:" + (i * 10).ToString());

									    backgroundWorker.ReportProgress(i);

									    Application.DoEvents();

									   }

									  }

									  private void button1_Click(object sender, EventArgs e)

									  {

									   backgroundWorker.RunWorkerAsync();

									  }

									 }

									}