进度条和后台工作在Windows应用程序中的问题

问题描述

我是Yogesh Sharma。我正在使用C＃在Windows窗体中使用progressbar。我需要从我的C＃代码中打开一个Corel Draw文件（.cdr）。执行此任务大约需要10秒钟，因此我想使用ProgressBar。我正在尝试使用BackgroundWorker。我的C＃代码如下......

Hi, I am Yogesh Sharma. I am working with progressbar in Windows Forms using C#. I need to open a Corel Draw file(.cdr) from my C# code. It takes about 10 seconds to do this task, hence I want to use ProgressBar. I am trying it with BackgroundWorker. My C# code is as follows...

private void button1_Click(object sender, EventArgs e)
{
    progressBar1.Maximum = 100;
    progressBar1.Step = 1;
    progressBar1.Value = 0;
    backgroundWorker1.RunWorkerAsync();
    CorelDRAW.Application cdr = new CorelDRAW.Application();
    cdr.OpenDocument(@"d:\xxx.cdr", 1);
    cdr.AppWindow.WindowState = cdrWindowState.cdrWindowMaximized;
}

private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
    BackgroundWorker worker = sender as BackgroundWorker;

    for (int i = 1; i <= 10; i++)
    {
        // Perform a time consuming operation and report progress.
        System.Threading.Thread.Sleep(1000);
        worker.ReportProgress(i * 10);
    }
}

private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
    progressBar1.Value = e.ProgressPercentage;
}

我的问题是当我点击button1时，ProgressBar没有显示任何进展。当任务完成时（i：e cdr文件被打开），进度条立即显示完整进度。我需要在打开cdr文件的过程中显示进度。



请帮助我在这里缺少或我的代码有什么问题？

任何帮助都将不胜感激。

My problem is that when I click on button1, ProgressBar doesn''n show any progress. And when the task is completed(i:e cdr file gets opened), progressbar shows the full progress immediately. I need to show the progress during the process of opening cdr file.

Please help what I am missing here or what is wrong with my code?
Any help will be appreciated.

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