c#进度条实现方法

由 xqjrorz 创建，Carrie 最后一次修改 2018-05-11 在我们使用c#做WinFrom开发时，经常会用到进度条（ProgressBar）。那么如何才能实现winfrom进度条及进度信息提示呢？方法一：多线程C#多线程教程使用c#做WinFrom开发，要实现进度条效果就需要用到多线程，如果不采用多线程控制进度条，窗口很容易假死（无法适时看到进度信息）。1、设计界面，注意需要引用 using System.Threading;控件名称分别为：progressBar1；label1；textBox1；button1；2、定义一个代理，用于更新ProgressBar的值（Value）及在执行方法的时候，返回方法的处理信息。 private delegate void SetPos(int ipos,string vinfo);//代理3、进度条值更新函数（参数必须跟声明的代理参数一样） private void SetTextMesssage(int ipos,string vinfo) { if (this.InvokeRequired) { SetPos setpos = new SetPos(SetTextMesssage); this.Invoke(setpos, new object[] { ipos,vinfo }); } else { this.label1.Text = ipos.ToString() + "/1000"; this.progressBar1.Value = Convert.ToInt32(ipos); this.textBox1.AppendText(vinfo); } }4、函数实现              private void button1_Click(object sender, EventArgs e) { Thread fThread = new Thread(new ThreadStart(SleepT)); fThread.Start(); }5、新的线程执行函数： private void SleepT() { for (int i = 0; i < 500; i++) { System.Threading.Thread.Sleep(10); SetTextMesssage(100*i/500,i.ToString()+"\r\n"); } }程序运行效果图：方法二：通过控件backgroundWorker1实现1、主窗体设计：控件名称：button1;backgroundWorker1;对backgroundWorker1控件，属性设置：2、主页面后台代码：              using System.Threading;//引用空间名称 private void button1_Click(object sender, EventArgs e) { this.backgroundWorker1.RunWorkerAsync(); // 运行 backgroundWorker 组件 ProcessForm form = new ProcessForm(this.backgroundWorker1);// 显示进度条窗体 form.ShowDialog(this); form.Close(); } private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) { if (e.Error != null) { MessageBox.Show(e.Error.Message); } else if (e.Cancelled) { } else { } } //你可以在这个方法内，实现你的调用，方法等。 private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e) { BackgroundWorker worker = sender as BackgroundWorker; for (int i = 0; i < 100; i++) { Thread.Sleep(100); worker.ReportProgress(i); if (worker.CancellationPending) // 如果用户取消则跳出处理数据代码 { e.Cancel = true; break; } } }分别为button控件和backgroundWorker1控件选好事件。3、设置子窗体（及显示进度条的窗体）：控件名称：progressBar1;button14、子窗体，后台代码：        private BackgroundWorker backgroundWorker1; //ProcessForm 窗体事件(进度条窗体) public ProcessForm(BackgroundWorker backgroundWorker1) { InitializeComponent(); this.backgroundWorker1 = backgroundWorker1; this.backgroundWorker1.ProgressChanged += new ProgressChangedEventHandler(backgroundWorker1_ProgressChanged); this.backgroundWorker1.RunWorkerCompleted += new RunWorkerCompletedEventHandler(backgroundWorker1_RunWorkerCompleted); } void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) { //this.Close();//执行完之后，直接关闭页面 } void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e) { this.progressBar1.Value = e.ProgressPercentage; } private void button1_Click(object sender, EventArgs e) { this.backgroundWorker1.CancelAsync(); this.button1.Enabled = false; this.Close(); } }只为button选好事件执行效果为：以上就是C#实现winfrom进度条及进度信息提示的方法介绍，希望对大家有所帮助。