linq to xml运用示例

代码：

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using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.Http;

using XFK.LYTravel.Common.helper;

using XFK.LYTravel.Infrastructure;

using SFast;

using System.Xml.Linq;

using XFK.LYTravel.Common;

 

namespace XFK.LYTravel.LYTravelApi.Areas.AppMain.Controllers

{

    public class WXUnifiedOrderPayController : ApiController

    {

        public ResponseBase<WXUnifiedPayResp> Post(WXUnifiedPayReq req)

        {

            AppMainLogHelper.WriteLog("-----进入AppMain-WXUnifiedOrderPay接口！（/api/AppMain/WXUnifiedOrderPay）------");

            AppMainLogHelper.WriteLog("入参：" + req._ToJsonStr());

            ResponseBase<WXUnifiedPayResp> result = new ResponseBase<WXUnifiedPayResp>();

            XElement xe = new XElement("xml",

                new XElement("appid", req.appid),

                new XElement("attach", req.attach),

                new XElement("body", req.body),

                new XElement("mch_id", req.mch_id),

                new XElement("nonce_str", req.nonce_str),

                new XElement("notify_url", req.notify_url),

                new XElement("openid", req.openid),

                new XElement("out_trade_no", req.out_trade_no),

                new XElement("spbill_create_ip", req.spbill_create_ip),

                new XElement("total_fee", req.total_fee),

                new XElement("trade_type", req.trade_type),

                new XElement("scene_info", req.scene_info),

                new XElement("sign", req.sign)

                );

            string xmlStr = xe.ToString();

            string url = "https://api.mch.weixin.qq.com/pay/unifiedorder";

            AppMainLogHelper.WriteLog(string.Format("发送微信统一下单接口，地址：{0}，参数：{1}", url, xmlStr));

            string strResp = TrainTicketAPI.PostWebRequest(url, xmlStr);

            AppMainLogHelper.WriteLog("返回数据：" + strResp);

            XElement xeRet = XElement.Parse(@strResp);

            WXUnifiedPayResp resp = new WXUnifiedPayResp();

            resp.return_code = xeRet.Descendants("return_code").First().Value;

            resp.return_msg = xeRet.Descendants("return_msg").First().Value;

            if (resp.return_code == "SUCCESS")

            {

                resp.appid = xeRet.Descendants("appid").First().Value;

                resp.mch_id = xeRet.Descendants("mch_id").First().Value;

                resp.nonce_str = xeRet.Descendants("nonce_str").First().Value;

                resp.sign = xeRet.Descendants("sign").First().Value;

                resp.result_code = xeRet.Descendants("result_code").First().Value;

                if (resp.result_code == "SUCCESS")

                {

                    resp.prepay_id = xeRet.Descendants("prepay_id").First().Value;

                    resp.trade_type = xeRet.Descendants("trade_type").First().Value;

                    resp.mweb_url = xeRet.Descendants("mweb_url").First().Value;

                }

                result.resultCode = "200";

                result.IsSuccess = true;

                result.Message = resp.return_msg;

                result.ResultData = resp;

            }

            else

            {

                result.resultCode = "201";

                result.IsSuccess = false;

                result.Message = resp.return_msg;

                result.ResultData = null;

            }

 

            return result;

        }

 

    }

 

    public class WXUnifiedPayReq

    {

        public string appid { get; set; }

        public string attach { get; set; }

        public string body { get; set; }

        public string mch_id { get; set; }

        public string nonce_str { get; set; }

        public string notify_url { get; set; }

        public string openid { get; set; }

        public string out_trade_no { get; set; }

        public string spbill_create_ip { get; set; }

        public string total_fee { get; set; }

        public string trade_type { get; set; }

        public string scene_info { get; set; }

        public string sign { get; set; }

    }

 

    public class WXUnifiedPayResp

    {

        public string return_code { get; set; }

        public string return_msg { get; set; }

        public string appid { get; set; }

        public string mch_id { get; set; }

        public string nonce_str { get; set; }

        public string sign { get; set; }

        public string result_code { get; set; }

        public string prepay_id { get; set; }

        public string trade_type { get; set; }

        public string mweb_url { get; set; }

    }

}

 参考：
http://skybirdzw.blog.163.com/blog/static/7257062620140244456725/
http://skybirdzw.blog.163.com/blog/static/72570626201402445651865/