/// <summary> /// 是否存在帐号 /// By xzz 2010-11-8 /// </summary> /// <param name="userName"></param> /// <returns></returns> public string IsExistUser(string userName) { DataTable dt = userService.IsExistUser(userName); if (dt.Rows.Count > 0) { return("帐号已存在"); } else { return("帐号可以使用"); } }