Исключение Обработка не обнаружена блок catch catch

Question

это мой код.

void worker_DoWork(object sender, DoWorkEventArgs e) 
      { 
       try 
       { 
        foreach (var a in fpath) 
        {  
         fin = new FileStream(a, FileMode.Open, FileAccess.Read, FileShare.Read); 
          total = fin.Length; 
          totalsize += total; 
          fin.Close(); 
        } 

       foreach (var a in fpath) 
       { 

         dispatchertimer.Start(); 
         stopwatch.Start(); 

         filepath = System.IO.Path.GetFileName(a.ToString()); 
         string destFile = System.IO.Path.Combine(DestinationPath, filepath); 
         fin = new FileStream(a.ToString(), FileMode.Open, FileAccess.Read, FileShare.Read); 
         filesize = fin.Length; 
         if (overwrite == true) 
         { 



          fout = new FileStream(destFile, FileMode.OpenOrCreate, FileAccess.Write); 
          while (fin.Position != filesize) 
          { 
           int n = fin.Read(buffer, 0, buffer.Length); 
           fout.Write(buffer, 0, n); 
           currentfilecopy += n; 
           PBvalue = currentfilecopy * 100/totalsize; 
           (sender as BackgroundWorker).ReportProgress((int)PBvalue); 
          } 
          fout.Flush(); 
          fout.Close(); 
          fileResultCollection.Add(new Result() { FileName = filepath, FileResult = "Pass" }); 
         } 
         else 
         { 
          if (!File.Exists(System.IO.Path.Combine(DestinationPath, filepath))) 
          { 
           fout = new FileStream(destFile, FileMode.OpenOrCreate, FileAccess.Write); 
           while (fin.Position != filesize) 
           { 
            int n = fin.Read(buffer, 0, buffer.Length); 
            fout.Write(buffer, 0, n); 
            currentfilecopy += n; 
            PBvalue = currentfilecopy * 100/totalsize; 
            (sender as BackgroundWorker).ReportProgress((int)PBvalue); 
           } 
           fileResultCollection.Add(new Result() { FileName = filepath, FileResult = "Pass" }); 
          } 
          else 
          { 

            //int n = fin.Read(buffer, 0, buffer.Length); 
            //fout.Write(buffer, 0, n); 
            filesize = fin.Length; 
            currentfilecopy += filesize; 
            PBvalue = currentfilecopy * 100/totalsize; 
            (sender as BackgroundWorker).ReportProgress((int)PBvalue); 

           fileResultCollection.Add(new Result() { FileName = filepath, FileResult = "Pass" }); 
          } 
         } 

        } 
       } 
       #region CatchBlocks 
       catch (UnauthorizedAccessException ex) 
        { 
         fileResultCollection.Add(new Result() { FileReason = ex.Message, FileResult = "Fail",FileName = filepath }); 

        } 
        catch (ArgumentNullException ex) 
        { 
         fileResultCollection.Add(new Result() { FileReason = ex.Message, FileResult = "Fail", FileName = filepath }); 
        } 
        catch (ArgumentException ex) 
        { 
         fileResultCollection.Add(new Result() { FileReason = ex.Message, FileResult = "Fail", FileName = filepath }); 
        } 
        catch (PathTooLongException ex) 
        { 
         fileResultCollection.Add(new Result() { FileReason = ex.Message, FileResult = "Fail", FileName = filepath }); 
        } 
        catch (DirectoryNotFoundException ex) 
        { 
         fileResultCollection.Add(new Result() { FileReason = ex.Message, FileResult = "Fail", FileName = filepath }); 
        } 
        catch (FileNotFoundException ex) 
        { 
         fileResultCollection.Add(new Result() { FileReason = ex.Message, FileResult = "Fail", FileName = filepath }); 
        } 
        catch (IOException ex) 
        { 
         fileResultCollection.Add(new Result() { FileReason = ex.Message, FileResult = "Fail", FileName = filepath }); 
        } 
        catch (NotSupportedException ex) 
        { 
         fileResultCollection.Add(new Result() { FileReason = ex.Message, FileResult = "Fail", FileName = filepath }); 
        } 
       #endregion 
      } 

Answer 1

Вы попадаете на определенные исключения. Если Exception произойдет, что вы явно не указали, программа все равно будет разбита.

Как вы регулируете все исключения таким же образом, вы можете так же перейти на общий обработчик исключений:

try 
{ 
    //... 
} 
catch (Exception ex) 
{ 
    fileResultCollection.Add(new Result() { FileReason = ex.Message, FileResult = "Fail", FileName = filepath }); 
}