如何在不使我的应用程序无响应的情况下扫描文件并显示当前扫描? [英] How To Scan Files and Show Current Scanning Without Making My Application Non-Responding?

问题描述

大家好，
我正在c.net上开发用于.pdf文件管理的桌面应用程序.当我在任何文件夹中搜索.pdf时，会出现问题，我的应用程序停止响应了一段时间.我使用xmlwriter写入数据(即文件名，作者名，主题).我也有一个标签来显示文件的当前扫描，但仅在扫描完成后才显示最后一个文件.请帮忙！

谢谢

问候，
Gourav Goyal

Hi All,
I am developing a desktop application on c# .net for .pdf file managing. A problem occur when i search any folder for .pdf, my application stopm responding for some time. I use xmlwriter to write data(i.e. file name,author name,subject).Also i have a label to show current scanning of file but it only show last file after complition of scanning. Please help!!

Thanks

Regards,
Gourav Goyal

推荐答案

您可以尝试使用BackgroundWorker，

You might try using a BackgroundWorker, http://msdn.microsoft.com/en-us/library/system.componentmodel.backgroundworker.aspx[^]

您要做的是使用后台工作者，然后将文件名传递回ReportProgress.这是类似的东西.

What you do is use a background worker, and pass the names of the files back in the ReportProgress. Here is something similar.

public MainWindow()
 {
     InitializeComponent();
     ItemsSource = new ObservableCollection<string>() { "pme", "two", 3.ToString() };
     DataContext = this;
     var bw = new BackgroundWorker();
     bw.DoWork += new DoWorkEventHandler(bw_DoWork);
     bw.WorkerReportsProgress = true;
     bw.ProgressChanged += new ProgressChangedEventHandler(bw_ProgressChanged);
     bw.RunWorkerAsync();

 }

 void bw_ProgressChanged(object sender, ProgressChangedEventArgs e)
 {
     ItemsSource.Add(e.UserState.ToString());
}

 void bw_DoWork(object sender, DoWorkEventArgs e)
 {
     var bw = (BackgroundWorker) sender;
     for (int i = 1; i < 10000; i++)
         bw.ReportProgress(i / 10000, i);
 }

 public ObservableCollection<string> ItemsSource { get; set; }

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