/// <summary>
 /// 获取除指定ID 以外的会员信用总值
 /// 编写时间: 2010-10-7 14:00
 /// 创建者:Mickey
 /// </summary>
 /// <param name="Id"></param>
 /// <returns></returns>
 public static string GetUserCredits(string Id, string userId)
 {
     return(ObjectToJson.ReaderToJson(userService.GetUserCredits(Id, userId)));
 }