的WinForms：避免凍結申請

Question

我做「大」文件中的一些操作（約4MB）

我這樣做：1。 從目錄中獲取所有文件，並將它們放置在一個IList MyInfoClass有屬性：名稱，擴展名，fullPath，creationDate，contentPart 2.我做一個Linq查詢來獲得一些擴展類型。 3.我在Linq查詢結果上循環，併爲每個打開文件，執行一些操作（獲取值）並將結果放入MyFileIno.ContentPart中。

FYI：30個文件，這是一個14sec操作

這就是工作。

問題是，當我從UI運行我的庫時，當我單擊按鈕時，窗口在操作期間凍結。我想：

1. 解決被凍結的形式
2. 看到進度操作

你能不能給我解決這類問題的最佳做法是什麼？

感謝，

代碼

public class FileManager 
{ 
    public string CurrentFileName { get; set; } 
    public void Validation(string path) 
    { 
     IList<InfoFile> listFile = GetListFile(path); 
     foreach (InfoFile item in listFile) 
     { 
      CurrentFileName = item.Name; 
      ..... 
     } 
    } 
} 


private void button1_Click(object sender, EventArgs e) 
{ 
    var worker = new BackgroundWorker(); 
    worker.DoWork += (s, args) => 
    { 
     int percentProgress = 6; 
     FileManager fileManager = new FileManager(); 
     fileManager.Validation(@"C:....."); 
     ((BackgroundWorker)s).ReportProgress(percentProgress, fileManager.CurrentFileName); 
    }; 

    worker.ProgressChanged += (s, args) => 
    { 
     var currentFilename = (string)args.UserState; 
     label1.Text = currentFilename; 
     progressBar1.Value = args.ProgressPercentage; 
    }; 

    worker.RunWorkerCompleted += (s, args) => 
    { 
     progressBar1.Value = 0; 
    }; 
    worker.RunWorkerAsync(); 
} 

Answer 1

申請凍結，因爲你正在執行的文件，在主線程解析。您可以使用BackgroundWorker在新線程上執行操作。以下是一些可幫助您開始使用的僞代碼：

private void button1_Click(object sender, EventArgs e) 
{ 
    var worker = new BackgroundWorker(); 
    worker.DoWork += (s, args) => 
    { 
     // Here you perform the operation and report progress: 
     int percentProgress = ... 
     string currentFilename = ... 
     ((BackgroundWorker)s).ReportProgress(percentProgress, currentFilename); 
     // Remark: Don't modify the GUI here because this runs on a different thread 
    }; 
    worker.ProgressChanged += (s, args) => 
    { 
     var currentFilename = (string)args.UserState; 
     // TODO: show the current filename somewhere on the UI and update progress 
     progressBar1.Value = args.ProgressPercentage; 
    }; 
    worker.RunWorkerCompleted += (s, args) => 
    { 
     // Remark: This runs when the DoWork method completes or throws an exception 
     // If args.Error != null report to user that something went wrong 
     progressBar1.Value = 0; 
    }; 
    worker.RunWorkerAsync(); 
}