/// <summary>
    /// 将异常写入到日志文件
    ///
    /// </summary>
    /// <param name="ex">异常对象</param>
    public static void WriteExceptionToFile(Exception ex)
    {
        //获取登录对象
        string username = "";

        if (username != null)
        {
            string errorMsg = ErrorHandler.GetErrorDescription(ex, username);
            Log4netHelper.GetErrorLog().Error(errorMsg);
        }
        else
        {
            string errorMsg = ErrorHandler.GetErrorDescription(ex);
            Log4netHelper.GetErrorLog().Error(errorMsg);
        }
    }
        /// <summary>
        /// 记录错误日志
        /// </summary>
        /// <param name="ex"></param>
        public static void Error(Exception ex)
        {
            string errorMsg = ErrorHandler.GetErrorDescription(ex);

            Log4netHelper.GetErrorLog().Error(errorMsg);
        }
 public static void Error(string error)
 {
     Log4netHelper.GetErrorLog().Error(error);
 }