下载了整合DNT论坛的web service文件，这要怎么用

private Discuz.Config.GeneralConfigInfo config = Discuz.Config.GeneralConfigs.GetConfig();
        /// <summary>
        /// 用户登录
        /// </summary>
        /// <param name="UserName">用户名</param>
        /// <param name="Password">登陆密码</param>
        /// <param name="ExpiresTime">Cookie有效时间,单位分钟</param>
        /// <returns>是否登陆成功</returns>
        [WebMethod]
        public bool Login(string UserName, string Password, int ExpiresTime)
        {
            try
            {
                int uid = Users.CheckPassword(UserName, Password, true);
                if (uid != -1)
                {
                    ShortUserInfo userinfo = Users.GetShortUserInfo(uid);
                    if (userinfo != null)
                    {
                        //删除之前的错误登录信息
                        LoginLogs.DeleteLoginLog(DNTRequest.GetIP());
                        //根据积分公式刷新用户总积分
                        UserCredits.UpdateUserCredits(uid);
                        //写入用户登录后的cookie
                        ForumUtils.WriteUserCookie(uid, Utils.StrToInt(ExpiresTime, -1), config.Passwordkey);
                        //更新该用户最后访问时间
                        Users.UpdateUserLastvisit(uid, DNTRequest.GetIP());
                    }
                    return true;
                }
                else
                {
                    LogWrite log = new LogWrite();
                    log.WriteLog(string.Format("用户 {0} 登陆失败:用户不存在或用户名与密码不匹配 用户IP:{1}", UserName, DNTRequest.GetIP()), DNTRequest.GetIP());
                    return false;
                }
            }
            catch (Exception ex)
            {
                LogWrite log = new LogWrite();
                log.WriteLog(ex, DNTRequest.GetIP());
                return false;
            }
        }