傳遞參數的BackgroundWorker

Question

我有以下類型的3名名單：

1. FOLDERNAME：字符串
2. FTPcount：詮釋
3. Expectedcount：詮釋

所有都彼此相關（基於它們在列表中的索引），我想將它們作爲參數傳遞給BackGroundWorker，它讀取folderName，同時增加FTPcount和Expectedcount。

我該如何傳遞它們（通過引用？），以便在每個執行完成後我能夠看到增量？

 List<string> folderName = new List<string>(); 
     List<int> Expectedcount = new List<int>(); 
     List<int> FTPcount = new List<int>(); 

     foreach (string folder in Properties.Settings.Default.Folders) 
     { 
      BackgroundWorker bg = new BackgroundWorker(); 

      bGs.Add(bg); 
      Expectedcount.Add(new int()); 
      FTPcount.Add(new int()); 
      folderName.Add(folder); 

      bg.DoWork += new DoWorkEventHandler(Process_Instiution); 
      bg.RunWorkerAsync(new { folderName = folder, Expected = Expectedcount[Expectedcount.Count - 1] as object, FTP = FTPcount[FTPcount.Count - 1] as object }); 
     } 

     while (true) 
     { 
      bool IsBusy = false; 
      foreach (BackgroundWorker bg in bGs) 
       if (bg.IsBusy) 
       { 
        IsBusy = true; 
        break; 
       } 

      if (IsBusy) 
       Application.DoEvents(); 
      else 
       break; 
     } 
     //Code to read the various List and see how many files were expected and how many were FTPed. 

Answer 1

使用指定參數的DoWork(Object data) method。您必須投射並從args Argument Property中檢索。

我會創建一個對象包裝來傳遞數據或使用匿名類型。