IsolatedStorageFileStream不允許操作 - WP7 C＃

Question

我知道這個問題已經被問了很多次，但我已經幾乎嘗試了一切，但沒有運氣。所以請幫助。

有些全局變量：

private string _DirectoryForLogin = "LoginFiles", _FileForLogin = "Login.startup"; 
private IsolatedStorageFile _GlobalAccessRight = IsolatedStorageFile.GetUserStoreForApplication(); 

_DirectoryForLogin店，存儲登錄信息和_FileForLogin商店TXT保存爲.STARTUP（我不認爲這是問題）文件的目錄名。

後來InitializeCompolnent（）我這樣做後：

using(_GlobalAccessRight){ 
      //Checking if directory exists; case when user had already been logged in. 
      if (_GlobalAccessRight.DirectoryExists(_DirectoryForLogin)) 
      { 
       //Check if login startup file is already created. 
       if (_GlobalAccessRight.FileExists(_DirectoryForLogin + "\\" + _FileForLogin)) 
       { 
        //Not of much concern for you people. 
        _UserNameLabel.Text = "Please wait.... Logging in."; 
        _UserNameHolder.BorderThickness = new Thickness(0); 
        _UserNameHolder.IsEnabled = false; 
        _PasswordLabel.Text = ""; 
        _PasswordHolder.BorderThickness = new Thickness(0); 
        _PasswordHolder.IsEnabled = false; 
        _LoginButton.BorderThickness = new Thickness(0); 
        _LoginButton.Content = ""; 
        _LoginButton.IsEnabled = false; 

       } 
       else 
        _GlobalAccessRight.CreateFile(_DirectoryForLogin + "\\" + _FileForLogin); 
       //This part basically only creates the file, if directory was already existing. 
      } 
      else 
      { 
        //Creates directory as well as file. 
        _GlobalAccessRight.CreateDirectory(_DirectoryForLogin); 
        _GlobalAccessRight.CreateFile(_DirectoryForLogin + "\\" + _FileForLogin); 

      } 
     } 

事情到現在工作的罰款。問題是，如果我在創建目錄後嘗試刪除任何目錄，它會向我發送一個錯誤消息：「IsolatedStorage不允許操作」。但是我暫時解決了這個問題，只需關閉我的模擬器，以便獲得新的IsolatedStorage位置。

接下來我的文字和密碼箱取來自用戶的輸入，並超越了這個代碼寫他們上的一個文件：

 using(_GlobalAccessRight){ 
      //I have also tried by giving the FileShare argument below. 
      using(IsolatedStorageFileStream WritingStreamForLoginInfo = new IsolatedStorageFileStream(_DirectoryForLogin + "\\" + _FileForLogin, FileMode.OpenOrCreate, FileAccess.ReadWrite, _GlobalAccessRight)){ 
       using(StreamWriter WritingLoginInfo = new StreamWriter(WritingStreamForLoginInfo)){ 
        String _LoginCredentials = "UserName: "; 
        _LoginCredentials += _UserNameHolder.Text; 
        _LoginCredentials += "\n"; 
        _LoginCredentials = "Password: "; 
        _LoginCredentials += _PasswordHolder.Password; 

        //I added this afterwards. Before it was not here. And still it was not working. 
        WritingLoginInfo.Flush(); 
        WritingLoginInfo.Write(_LoginCredentials.ToCharArray(), 0, _LoginCredentials.Length); 
        WritingLoginInfo.Close(); 
        WritingStreamForLoginInfo.Close(); 
       }//End of 1st using clause 
      }//End of second using clause 
     }//End of third using clause 

上面寫的代碼在執行上的功能執行登錄按鈕的點擊事件。 代碼發送此錯誤： 應用商店必須爲此操作打開。

異常細節：

System.ObjectDisposedException了未處理

消息=商店必須打開此操作。

堆棧跟蹤：

at System.IO.IsolatedStorage.IsolatedStorageFileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, IsolatedStorageFile isf) 

    at System.IO.IsolatedStorage.IsolatedStorageFileStream..ctor(String path, FileMode mode, FileAccess access, IsolatedStorageFile isf) 

    at SafeMessenger.MainPage._LoginButton_Tap(Object sender, GestureEventArgs e) 

    at MS.Internal.CoreInvokeHandler.InvokeEventHandler(Int32 typeIndex, Delegate handlerDelegate, Object sender, Object args) 

    at MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName) 

現在最後一件事情，我要告訴你的人。在我做之前，爲每件事物創建一個單獨的IsolatedStorageFile對象。這是上面的代碼和目錄創建代碼。那時我得到這個錯誤： 「IsolatedStorage不允許操作」。

現在，我試圖通過各種變量的調試細節，我發現這可能是一些幫助你的人。請記住_GlobalAccessRight是IsolatedStorageFile類型的全局私有變量。

配額 'this._GlobalAccessRight.Quota' 扔類型的異常 'System.ObjectDisposedException' 長{} System.ObjectDisposedException

請幫助我。感謝您的時間和任何幫助，提前。這將是一個很大的幫助。

Answer 1

因此，經過閱讀和思考了很多，我終於得到了自己的代碼。 首先，由於我對流的處理不當，首先出現操作不允許的錯誤。

首先，我改變了這些行：

. 
. 
. 
} 
else 
    _GlobalAccessRight.CreateFile(_DirectoryForLogin + "\\" + _FileForLogin); 
      //This part basically only creates the file, if directory was already existing. 
} 
else 
    { 
     //Creates directory as well as file. 
     _GlobalAccessRight.CreateDirectory(_DirectoryForLogin); 
     _GlobalAccessRight.CreateFile(_DirectoryForLogin + "\\" + _FileForLogin); 
    } 

要：

. 
. 
. 
} 
else 
    _GlobalAccessRight.CreateFile(_DirectoryForLogin + "\\" + _FileForLogin).Dispose(); 
      //This part basically only creates the file, if directory was already existing. 
} 
else 
    { 
     //Creates directory as well as file. 
     _GlobalAccessRight.CreateDirectory(_DirectoryForLogin); 
     _GlobalAccessRight.CreateFile(_DirectoryForLogin + "\\" + _FileForLogin).Dispose(); 
    } 

第二個錯誤是這樣的：我 全局聲明的IsolatedStorageFile對象。在我的第一個使用區塊中使用後：

using(_GlobalAccessRight){ 
     //Checking if directory exists; case when user had already been logged in. 
     if (_GlobalAccessRight.DirectoryExists(_DirectoryForLogin)) 
     { 

。 。 。 。 它被放置在它的末尾。 因此，當我再次使用它的功能：

using(_GlobalAccessRight){ 
     //I have also tried by giving the FileShare argument below. 
     using(IsolatedStorageFileStream WritingStreamForLoginInfo = new IsolatedStorageFileStream(_DirectoryForLogin + "\\" + _FileForLogin, FileMode.OpenOrCreate, FileAccess.ReadWrite, _GlobalAccessRight)){ 
      using(StreamWriter WritingLoginInfo = new StreamWriter(WritingStreamForLoginInfo)){ 
       String _LoginCredentials = "UserName: "; 

。 。 。 它向我拋出錯誤消息： 「商店必須爲此打開。」

所以我改成了這樣：

using(_GlobalAccessRight = IsolatedStorageFile.GetUserStoreForApplication()){ 
     using(IsolatedStorageFileStream WritingStreamForLoginInfo = new IsolatedStorageFileStream(_DirectoryForLogin + "\\" + _FileForLogin, FileMode.OpenOrCreate, FileAccess.ReadWrite, _GlobalAccessRight)){ 
      using(StreamWriter WritingLoginInfo = new StreamWriter(WritingStreamForLoginInfo)){ 
       String _LoginCredentials = "UserName: "; 

完蛋了！好樣的！ :)

Answer 2

嘗試刪除以下兩行：

WritingLoginInfo.Close(); 
WritingStreamForLoginInfo.Close(); 

using塊應該打開和關閉/自動配置流。也許在代碼嘗試關閉using塊末尾的已關閉連接時出現錯誤「Store必須爲此操作打開」。