使用HttpClient连接WebAPI 转送JSON实体数据

没有什么好说的，直接上代码。

实体类：

    public class NBOrder
    {
        /// <summary>
        /// 订单号
        /// </summary>
        public string OrderCode { get; set; }
        /// <summary>
        /// 店铺名
        /// </summary>
        public string ShopName { get; set; }
        /// <summary>
        /// 运费
        /// </summary>
        public decimal WayFee { get; set; }
        /// <summary>
        /// 买家实付金额
        /// </summary>
        public decimal PayAmount { get; set; }
        /// <summary>
        /// 购物网站买家账号
        /// </summary>
        public string WebsiteAccount { get; set; }
        /// <summary>
        /// 手机号
        /// </summary>
        public string Telephone { get; set; }
        /// <summary>
        /// 订单创建时间
        /// </summary>
        public DateTime DateCreated { get; set; }
        /// <summary>
        /// 支付单号
        /// </summary>
        public string PayCode { get; set; }
        /// <summary>
        /// 支付机构订单交易号
        /// </summary>
        public string PaymentInstitutionPayCode { get; set; }
        /// <summary>
        /// 支付时间
        /// </summary>
        public DateTime DatePaid { get; set; }
        /// <summary>
        /// 收件人名称
        /// </summary>
        public string ReceiverName { get; set; }
        /// <summary>
        /// 收件人身份证号
        /// </summary>
        public string ReceiverCardNo { get; set; }
        /// <summary>
        /// 收件人省
        /// </summary>
        public string ReceiverProvince { get; set; }
        /// <summary>
        /// 收件人市
        /// </summary>
        public string ReceiverCity { get; set; }
        /// <summary>
        /// 收件人区
        /// </summary>
        public string ReceiverArea { get; set; }
        /// <summary>
        /// 收货人地址
        /// </summary>
        public string ReceiverAddress { get; set; }
        /// <summary>
        /// 收货人电话
        /// </summary>
        public string ReceiverMobile { get; set; }
        /// <summary>
        /// 收件人邮编
        /// </summary>
        public string ReceiverPostCode { get; set; }
        /// <summary>
        /// 订单明细
        /// </summary>
        public IEnumerable<NBOrderItem> OrderItems { get; set; }
    }

    public class NBOrderItem
    {
        /// <summary>
        /// 商品名称
        /// </summary>
        public string ProductName { get; set; }
        /// <summary>
        /// 货号
        /// </summary>
        public string ProductCode { get; set; }
        /// <summary>
        /// 数量
        /// </summary>
        public int Quantity { get; set; }
        /// <summary>
        /// 商品单价
        /// </summary>
        public decimal ProductPrice { get; set; }
        /// <summary>
        /// 商品金额
        /// </summary>
        public decimal ProductAmount { get; set; }
    }

    public class OrderRequest
    {
        /// <summary>
        /// 账号名
        /// </summary>
        public string AccountName { get; set; }
        /// <summary>
        /// 验证Key
        /// </summary>
        public string Key { get; set; }
        /// <summary>
        /// 推送订单数据
        /// </summary>
        public NBOrder Order { get; set; }
    }

    public class OrderPushResult
    {
        /// <summary>
        /// 操作是否成功
        /// </summary>
        public bool IsSuccess { get; set; }

        public string Message { get; set; }
    }

服务端代码：

        // POST api/values
        public OrderPushResult Post([FromBody]OrderRequest value)
        {
            return new OrderPushResult() { IsSuccess = true, Message = "调用成功了。" };
        }

客户端代码：

            OrderRequest or = new OrderRequest();
            or.AccountName = "NBTest";
            or.Key = "4e0b859b68b3c9fdf59ebabf04aad8d2";

            NBOrder no = new NBOrder();
            no.OrderCode = "20160218153706565657";
            no.ShopName = "测试店铺";
            no.WayFee = 10;
            no.PayAmount = 40;
            no.WebsiteAccount = "zhangsan";
            no.DateCreated = DateTime.Now;
            no.PayCode = "12312312312312312343";
            no.PaymentInstitutionPayCode = "12312312312312312343";
            no.DatePaid = DateTime.Now;
            no.ReceiverName = "张三";
            no.ReceiverCardNo = "450102198109180032";
            no.ReceiverProvince = "吉林省";
            no.ReceiverCity = "长春市";
            no.ReceiverArea = "其它区";
            no.ReceiverAddress = "吉林省 长春市 其它区 吉林 长春市 其它区 汽车产业开发区中铁国际花园B2-204";
            no.ReceiverMobile = "18504305117";
            no.Telephone = "18504305117";
            no.ReceiverPostCode = "422600";

            List<NBOrderItem> OrderItems = new List<NBOrderItem>();
            NBOrderItem item = new NBOrderItem();
            item.ProductName = "尿不湿_销售";
            item.ProductCode = "XSG9998";
            item.Quantity = 1;
            item.ProductPrice = 20;
            item.ProductAmount = 20;
            OrderItems.Add(item);

            NBOrderItem item1 = new NBOrderItem();
            item1.ProductName = "苹果_销售";
            item1.ProductCode = "XSG9998";
            item1.Quantity = 1;
            item1.ProductPrice = 20;
            item1.ProductAmount = 20;
            OrderItems.Add(item);

            no.OrderItems = OrderItems;
            or.Order = no;

            string json = JsonConvert.SerializeObject(or);

            HttpClient client = new HttpClient();

            HttpContent contentPost = new StringContent(json, Encoding.UTF8, "application/json");

            var response = client.PostAsync("WebAPI地址", contentPost).Result;

            //确保HTTP成功状态值
            response.EnsureSuccessStatusCode();
            //await异步读取最后的JSON
            string value = response.Content.ReadAsStringAsync().Result;