/// <summary>  /// 功能：FileStream文件流讀取文件  /// </summary>  /// <param name="filePath">參數：文件路徑</param>  /// <returns>返回值：StreamReader對象</returns>  public static StreamReader ReadFileByFs(string filePath)  {   FileStream Fs = null;   StreamReader Sr = null;   try   {    Fs = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.Read);    Sr = new StreamReader(Fs, Encoding.Default);   }   catch (IOException e)   {    throw e;   }   return Sr;  }

 /// <summary>  /// 功能：FileStream文件流寫文件  /// </summary>  /// <param name="filePath">參數：文件路徑</param>  /// <returns>返回值：StreamWriter對象</returns>  public static StreamWriter WriteFileByFs(string filePath)  {   FileStream Fs = null;   StreamWriter Sw = null;   try   {    Fs = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.Write);    Sw = new StreamWriter(Fs, Encoding.Default);   }   catch (IOException e)   {    throw e;   }   return Sw;  }