System.IO.IsolatedStorage.IsolatedStorageFileStream.Seek C# (CSharp) Méthode

        public override long Seek(long offset, System.IO.SeekOrigin origin) { throw null; }
        public override void SetLength(long value) { }

 /// <summary>
 /// Opens logs file
 /// </summary>                
 private static void OpenLog()
 {
     try
     {
         var storageFile = GetIsolatedStorageFile();
         _storageFileStream = storageFile.OpenFile(_logFileName, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.ReadWrite | FileShare.Delete);
         _storageFileStream.Seek(0, SeekOrigin.End);
         _streamWriter = new StreamWriter(_storageFileStream);
         _streamWriter.AutoFlush = true;
         _isLogFileOpen = true;
     }
     catch
     {
         // we fail silently because logging trouble should not affect the end users
     }
 }