C# · 12月 28, 2021

WinForm中BackgroundWorker控件用法简单实例

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:

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(); } }}

希望本文所述对大家的C#程序设计有所帮助。