c#发起微信支付

using Senparc.Weixin.TenPay;
using Senparc.Weixin.TenPay.V3;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
namespace zzzili
{    
    public class WXPay
    {
        /// <summary>
        /// 
        /// </summary>
        /// <param name="appId">appid</param>
        /// <param name="mchId">商户id</param>
        /// <param name="body">商品描述</param>
        /// <param name="outTradeNo">第三方订单号</param>
        /// <param name="totalFee">总金额分</param>
        /// <param name="spbillCreateIp">客户端ip</param>
        /// <param name="notifyUrl">通知地址</param>
        /// <param name="openid">用户openid</param>
        /// <param name="key">商户API密钥</param>
        /// <returns></returns>
        public static Dictionary<string, object> startPay(string appId, string mchId, string body, string outTradeNo, int totalFee, string spbillCreateIp, string notifyUrl, string openid, string key)
        {
            var timeStamp = TenPayV3Util.GetTimestamp();//时间戳
            var nonceStr = TenPayV3Util.GetNoncestr();//随机字符串           
            TenPayV3UnifiedorderRequestData tenPayV3 = new TenPayV3UnifiedorderRequestData(appId, mchId, body, outTradeNo, totalFee, spbillCreateIp, notifyUrl, Senparc.Weixin.TenPay.TenPayV3Type.JSAPI, openid, key, nonceStr);
            //提交支付接口
            UnifiedorderResult result = TenPayV3.Unifiedorder(tenPayV3);
            string package = "prepay_id=" + result.prepay_id;
            Dictionary<string, object> payEntity = new Dictionary<string, object>();
            payEntity.Add("timeStamp", timeStamp);
            payEntity.Add("nonceStr", nonceStr);
            payEntity.Add("package", package);
            payEntity.Add("signType", "MD5");
            payEntity.Add("paySign", TenPayV3.GetJsPaySign(appId, timeStamp, nonceStr, package, key, "MD5"));
            return payEntity;
        }
    }
}

              wx.requestPayment({
                "timeStamp": res.data.Data.timeStamp,
                "nonceStr": res.data.Data.nonceStr,
                "package": res.data.Data.package,
                "signType": res.data.Data.signType,
                "paySign": res.data.Data.paySign,
                "success": function(res) {
                  console.log(res);
                },
                "fail": function(res) {
                  console.log(res);
                },
                "complete": function(res) {
                  console.log(res);
                }
              });

[HttpGet]
        [HttpPost]
        public string paynotify()
        {
            try
            {
                YFLog.logInfo("PayNotify==========================start");
                ResponseHandler resHandler = new ResponseHandler(HttpContext.Current);
                string return_code = resHandler.GetParameter("return_code");
                string return_msg = resHandler.GetParameter("return_msg");
                resHandler.SetKey(wx_key);//商户APIkey
                if (resHandler.IsTenpaySign() && return_code.ToUpper() == "SUCCESS")
                {
                    //直到这里，才能认为交易真正成功了，可以进行数据库操作，但是别忘了返回规定格式的消息！
                    string out_trade_no = resHandler.GetParameter("out_trade_no");
                    string transaction_id = resHandler.GetParameter("transaction_id");
                    string total_fee = resHandler.GetParameter("total_fee");
                    YFLog.logInfo("PayNotifyUrl回调", "支付成功");
                }
                else
                {
                    YFLog.logInfo("PayNotifyUrl回调", "支付失败");
                }
                return string.Format(@"<xml><return_code><![CDATA[{0}]]></return_code><return_msg><![CDATA[{1}]]></return_msg></xml>", return_code, return_msg);
            }
            catch (Exception ex)
            {
                YFLog.logInfo(ex.Message);
                throw;
            }
        }