C#中调用web API的get和post请求

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public bool AddUserSetToCloud(string user_id)
        {
            bool AddUserSetToCloudflag = false;
            usreInfoDAO userSet = new usreInfoDAO();
            //判断云端是否有用户数据
            //建立一个get请求
            HttpGet getData = new HttpGet();
            //get请求的URL地址
            Configuration config = DAL.Tool.GetConfig.GetHttpConfig();
            string IfFirstUserSetkey = config.AppSettings.Settings["IfFirstUserSet"].Value;
            IfFirstUserSetkey += "?user_id=" + user_id;
            string IfFirstUserSetURL = IfFirstUserSetkey;
            //执行get请求
            string selectResult = getData.Get(IfFirstUserSetURL);
            //序列化结果，查看是否有用户数据 true:代表有数据，False代表没有在云端查询到该用户的数据
            Boolean flag = Convert.ToBoolean(selectResult);

            if (!flag)
            {
                //查询本地用户的个人设置信息赋值到List里
                List<Entity.UserInfo> SettingList = userSet.SelectUserSetByUserID(user_id);
                //实例化一个序列化类
                DAL.Tool.Serialize serialize = new DAL.Tool.Serialize();
                //将List转化为json
                string postStr = serialize.ToSerialize(SettingList);
                //创建一个post请求类
                HttpPost post = new HttpPost();
                //post请求的URL
                Configuration configretion = DAL.Tool.GetConfig.GetHttpConfig();
                string AddUserSetToCloudkey = config.AppSettings.Settings["AddUserSetToCloud"].Value;
                AddUserSetToCloudkey += "?user_id=" + user_id;
                string AddUserSetToCloudURL = AddUserSetToCloudkey;
                //执行restFul的post请求,返回执行结果
                string flagPost = post.Postdata(postStr, AddUserSetToCloudURL);
                //json串反序列化成字符串--结果是boolean

            }
            AddUserSetToCloudflag = true;
            return AddUserSetToCloudflag;

        }