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目前,我正在尝试使用隔离存储将错误日志写入磁盘文件。突然,我开始收到以下异常:

System.TypeInitializationException was unhandled
  HResult=-2146233036
  Message=The type initializer for 'MyAppUtilities.ErrorLogger' threw an exception.
  Source=MyAppUtilities
  TypeName=MyAppUtilities.ErrorLogger
  StackTrace:
       at MyAppUtilities.ErrorLogger.AuditMethodError(Exception exc, String threadName,    String service)
       at MyWatchdog.Program.CurrentDomain_UnhandledException(Object sender, UnhandledExceptionEventArgs e) in c:\DataService\MyWatchdog\Program.cs:line 20
  InnerException: System.ArgumentNullException
      HResult=-2147467261
      Message=Value cannot be null.
  Parameter name: path
      Source=mscorlib
      ParamName=path
      StackTrace:
        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, FileShare share, IsolatedStorageFile isf)
        at System.IO.IsolatedStorage.IsolatedStorageFileStream..ctor(String path, FileMode mode, IsolatedStorageFile isf)
        at MyAppUtilities.ErrorLogger..cctor() in c:\DataService\DataServiceUtilities\ErrorLogger.cs:line 57
   InnerException:  

这基本上是我用来编写错误消息的代码:

    private static Assembly _assembly =
        System.Reflection.Assembly.GetExecutingAssembly();
    private static string _errorLogFile =
        _assembly.FullName + ".log";
    private static IsolatedStorageFile _isoStore =
        IsolatedStorageFile.GetStore(
        IsolatedStorageScope.User |
        IsolatedStorageScope.Assembly,
        null,
        null);
    private static IsolatedStorageFileStream _isoStream =
        new IsolatedStorageFileStream(_errorLogFile,
        FileMode.OpenOrCreate, _isoStore);

    public static void ApplicationAudit(string message)
    {
        using (StreamWriter sw = new StreamWriter(_isoStream))
        {
            _isoStream.Seek(0, SeekOrigin.End);
            sw.WriteLine("--------------------------------------------" +
                "------------------------------");
            sw.WriteLine(DateTime.Now.ToString() + ": " + message);
        }
    }

请注意,在我开始使用隔离存储之前,它在写入与可执行文件位于同一目录中的文件时工作正常。我花了一些时间搜索互联网,但没有找到任何与我收到的相同异常以及内部异常的帖子。

有人对我收到上述错误的原因有任何想法吗?TIA。

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1 回答 1

1

您似乎假设您的静态属性以固定顺序初始化。

如果您需要一个序列,请编写一个静态构造函数并按照您需要它们初始化的序列对其进行初始化。

例如,谁说_assembly已经在这一行初始化了:

private static string _errorLogFile = _assembly.FullName + ".log";
于 2014-05-15T15:28:39.780 回答