微信支付開發

 function onBridgeReady() {
            WeixinJSBridge.invoke(
                'getBrandWCPayRequest', {
                    "appId": $('#APPID').val(),     //公眾號名稱，由商戶傳入     
                    "timeStamp": $('#Timestamp').val(),         //時間戳，自1970年以來的秒數     
                    "nonceStr": $('#Noncestr').val(), //隨機串     
                    "package": $('#package').val(),
                    "signType": "MD5",         //微信簽名方式：     
                    "paySign": $('#paySign').val() //微信簽名 
                },
                function (res) {
                    if (res.err_msg == "get_brand_wcpay_request:ok") {
                        //支付成功，后續自行處理
                        
                    }
                    else
                    {
                        //支付取消，或者其他錯誤，自行處理
                    }
                }
            );
        }        　

//這里通過官方的一個實體，用戶自行使用，我這里是直接讀取的CONFIG文件
private static Senparc.Weixin.MP.TenPayLibV3.TenPayV3Info tenPayV3Info = new Senparc.Weixin.MP.TenPayLibV3.TenPayV3Info(ConfigurationManager.AppSettings["corpId"], ConfigurationManager.AppSettings["corpSecret"], ConfigurationManager.AppSettings["mch_id"]
                    , ConfigurationManager.AppSettings["key"], ConfigurationManager.AppSettings["v3url"]);

        /// <summary>
        /// 微信預支付
        /// </summary>
        /// <param name="attach"></param>
        /// <param name="body"></param>
        /// <param name="openid"></param>
        /// <param name="price"></param>
        /// <param name="orderNum"></param>
        /// <returns></returns>
        public static string PayInfo(string attach, string body, string openid, string price, string orderNum = "1833431773763549")
        {
            RequestHandler requestHandler = new RequestHandler(HttpContext.Current);
            //微信分配的公眾賬號ID（企業號corpid即為此appId）
            requestHandler.SetParameter("appid", tenPayV3Info.AppId);
            //附加數據，在查詢API和支付通知中原樣返回，該字段主要用于商戶攜帶訂單的自定義數據
            requestHandler.SetParameter("attach", attach);
            //商品或支付單簡要描述
            requestHandler.SetParameter("body", body);
            //微信支付分配的商戶號
            requestHandler.SetParameter("mch_id", tenPayV3Info.MchId);
            //隨機字符串，不長于32位。
            requestHandler.SetParameter("nonce_str", TenPayUtil.GetNoncestr());
            //接收微信支付異步通知回調地址，通知url必須為直接可訪問的url，不能攜帶參數。
            requestHandler.SetParameter("notify_url", tenPayV3Info.TenPayV3Notify);
            //trade_type=JSAPI，此參數必傳，用戶在商戶公眾號appid下的唯一標識。
            requestHandler.SetParameter("openid", openid);
            //商戶系統內部的訂單號,32個字符內、可包含字母，自己生成
            requestHandler.SetParameter("out_trade_no", orderNum);
            //APP和網頁支付提交用戶端ip，Native支付填調用微信支付API的機器IP。
            requestHandler.SetParameter("spbill_create_ip", "127.0.0.1");
            //訂單總金額，單位為分，做過銀聯支付的朋友應該知道，代表金額為12位，末位分分
            requestHandler.SetParameter("total_fee", price);
            //取值如下：JSAPI，NATIVE，APP，我們這里使用JSAPI
            requestHandler.SetParameter("trade_type", "JSAPI");
            //設置KEY
            requestHandler.SetKey(tenPayV3Info.Key);

            requestHandler.CreateMd5Sign();
            requestHandler.GetRequestURL();
            requestHandler.CreateSHA1Sign();
            string data = requestHandler.ParseXML();
            requestHandler.GetDebugInfo();

            //獲取并返回預支付XML信息
            return TenPayV3.Unifiedorder(data);
        }
    }

public class ShareInfo
    {
        string corpId = string.Empty;
        public string CorpId
        {
            get { return corpId; }
            set { corpId = value; }
        }
        string ticket = string.Empty;

        public string Ticket
        {
            get { return ticket; }
            set { ticket = value; }
        }
        string noncestr = string.Empty;

        public string Noncestr
        {
            get { return noncestr; }
            set { noncestr = value; }
        }
        string timestamp = string.Empty;

        public string Timestamp
        {
            get { return timestamp; }
            set { timestamp = value; }
        }

        private string paySign = string.Empty;
        public string PaySign
        {
            get { return paySign; }
            set { paySign = value; }
        }

        private string package = string.Empty;

        public string Package
        {
            get { return package; }
            set { package = value; }
        }
    }

public static ShareInfo GetPayInfo(string prepayid)
        {
            shareInfo = new ShareInfo();
            //檢查是否已經注冊jssdk
            if (!JsApiTicketContainer.CheckRegistered(corpId))
            {
                JsApiTicketContainer.Register(corpId, corpSecret);
            }
            JsApiTicketResult jsApiTicket = JsApiTicketContainer.GetTicketResult(corpId);
            JSSDKHelper jssdkHelper = new JSSDKHelper();
            shareInfo.Ticket = jsApiTicket.ticket;
            shareInfo.CorpId = corpId.ToLower();
            shareInfo.Noncestr = JSSDKHelper.GetNoncestr().ToLower();
            shareInfo.Timestamp = JSSDKHelper.GetTimestamp().ToLower();
            shareInfo.Package="prepay_id=" + prepayid.ToLower();

            RequestHandler requestHandler = new RequestHandler(HttpContext.Current);

            requestHandler.SetParameter("appId", shareInfo.CorpId);
            requestHandler.SetParameter("timeStamp", shareInfo.Timestamp);
            requestHandler.SetParameter("nonceStr", shareInfo.Noncestr);
            requestHandler.SetParameter("package", shareInfo.Package);
            requestHandler.SetParameter("signType", "MD5");

            requestHandler.SetKey(tenPayV3Info.Key);
            requestHandler.CreateMd5Sign();
            requestHandler.GetRequestURL();
            requestHandler.CreateSHA1Sign();
            shareInfo.PaySign = (requestHandler.GetAllParameters()["sign"]).ToString();
            return shareInfo;
        }