在onfileactivated方法讀取文件時獲取未經授權的異常

當用戶通過將文件類型與我的應用程序相關聯來選擇文件時，我試圖複製PDF文件。在onfileactivated方法讀取文件時獲取未經授權的異常

不幸的是我獲得未經授權的異常，當嘗試複製文件

async protected override void OnFileActivated(FileActivatedEventArgs e) 
    {//IReadOnlyList<IStorageItem> 


     Frame rootFrame = Window.Current.Content as Frame; 

     // Do not repeat app initialization when the Window already has content, 
     // just ensure that the window is active 
     if (rootFrame == null) 
     { 

      // Create a Frame to act as the navigation context and navigate to the first page 
      rootFrame = new Frame(); 

      rootFrame.NavigationFailed += OnNavigationFailed; 

      if (e.PreviousExecutionState == ApplicationExecutionState.Terminated) 
      { 
       //TODO: Load state from previously suspended application 
      } 

      // Place the frame in the current Window 
      Window.Current.Content = rootFrame; 
     } 

     if (rootFrame.Content == null) 
     { 
      if (!rootFrame.Navigate(typeof(MainPage))) 
      { 
       throw new Exception("Failed to create initial page"); 
      } 
     } 

     StorageFolder magazinefolder = await ApplicationData.Current.LocalFolder.CreateFolderAsync("pdffolder", CreationCollisionOption.OpenIfExists); 
     IAsyncAction asyncAction = Windows.System.Threading.ThreadPool.RunAsync(
(workItem) => 
{ 




    foreach (IStorageItem tm in e.Files) 
    { 

     File.Copy(tm.Path, magazinefolder.Path); 

    } 


    // this.loadlibrary(); 






}); 

     var p = rootFrame.Content as MainPage; 
     // p.AddFileCall(e.Files); 

     // Ensure the current window is active 
     Window.Current.Activate(); 

    }

來源

2015-12-07 suvish valsan

假設你'tm'是一個StorageFile，你有沒有試過'tm.CopyAsync（magazinefolder）;'？ – Romasz

是的，但同樣的錯誤 –

而當你不重定向工作到ThreadPool - 只需運行'await（e.Files.FirstOrDefault（）as StorageFile）.CopyAsync（magazineFolder）;'你也會得到一個異常？如果您獲得了有效的StorageFile，您是否曾試過並檢查過？是否有可能分享一個示例項目？ – Romasz

而不是將文件作爲IstorageItem我們可以直接把它作爲StorageFile這將解決這個問題

async public void AddFileCall(Windows.ApplicationModel.Activation.FileActivatedEventArgs e) 
    { 
     StorageFolder magazinefolder = await ApplicationData.Current.LocalFolder.CreateFolderAsync(Constants.MagFolder, CreationCollisionOption.OpenIfExists); 
     foreach (StorageFile file in e.Files) 
     { 
      await file.CopyAsync(magazinefolder,file.Name,NameCollisionOption.GenerateUniqueName); 
     } 

     MessageDialog Sucess = new MessageDialog("File Imported", "Thank You"); 
     await Sucess.ShowAsync(); 
     this.loadlibrary(); 
    }

來源

2015-12-08 06:36:26

在onfileactivated方法讀取文件時獲取未經授權的異常

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