<table>
                <tr>
                    <td>訂單名稱：</td>
                    <td>
                        <asp:TextBox ID="tbxOrderName" runat="server"></asp:TextBox>
                    </td>
                </tr>
                <tr>
                    <td>訂單金額：</td>
                    <td>
                        <asp:TextBox ID="tbxOrderAmount" runat="server"></asp:TextBox>
                    </td>
                </tr>
                <tr>
                    <td>訂單描述：</td>
                    <td>
                        <asp:TextBox ID="tbxOrderDesc" runat="server"></asp:TextBox>
                    </td>
                </tr>
                <tr>
                    <td colspan="2">
                        <asp:Button ID="btn" runat="server" Text="支付"  OnClick="btn_Click"/>
                    </td>
                </tr>
            </table>

// 應(yīng)用ID,您的APPID           
        public static string app_id = "20210******";
        // 支付寶網(wǎng)關(guān)
        public static string gatewayUrl = "https://openapi.alipaydev.com/gateway.do";
        // 商戶私鑰，您的原始格式RSA私鑰
        public static string private_key = "MIIE******";
        // 支付寶公鑰,查看地址：https://openhome.alipay.com/platform/keyManage.htm 對(duì)應(yīng)APPID下的支付寶公鑰。
        public static string alipay_public_key = "MIIBI******";
        // 簽名方式
        public static string sign_type = "RSA2";
        // 編碼格式
        public static string charset = "UTF-8";

        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void btn_Click(object sender, EventArgs e)
        {
            DefaultAopClient client = new DefaultAopClient(gatewayUrl, app_id, private_key, "json", "1.0", sign_type, alipay_public_key, charset, false);

            // 外部訂單號(hào)，商戶網(wǎng)站訂單系統(tǒng)中唯一的訂單號(hào)
            string out_trade_no = DateTime.Now.ToString("yyyyMMddHHmmss");
            // 訂單名稱
            string subject = this.tbxOrderName.Text;
            // 付款金額
            string total_amout = this.tbxOrderAmount.Text;
            // 商品描述
            string body = this.tbxOrderDesc.Text;
            // 支付中途退出返回商戶網(wǎng)站地址
            string quit_url = "https://localhost:44334/PayFailed.aspx?tradeNo=" + out_trade_no;
            // 支付成功返回商戶網(wǎng)站頁(yè)面
            string return_url = "https://localhost:44334/PaySuccess.aspx?tradeNo=" + out_trade_no;
            // 設(shè)置支付完成異步通知接收地址
            string notify_url = "https://localhost:44334/Notify.aspx";

            // 組裝業(yè)務(wù)參數(shù)model
            AlipayTradeWapPayModel model = new AlipayTradeWapPayModel();
            model.Body = body;
            model.Subject = subject;
            model.TotalAmount = total_amout;
            model.OutTradeNo = out_trade_no;
            model.ProductCode = "QUICK_WAP_WAY";
            model.QuitUrl = quit_url;

            AlipayTradeWapPayRequest request = new AlipayTradeWapPayRequest();
            // 設(shè)置支付完成同步回調(diào)地址
            request.SetReturnUrl(return_url);
            // 設(shè)置支付完成異步通知接收地址
            request.SetNotifyUrl(notify_url);
            // 將業(yè)務(wù)model載入到request
            request.SetBizModel(model);

            AlipayTradeWapPayResponse response = null;
            try
            {
                response = client.pageExecute(request, null, "post");
                Response.Write(response.Body);
            }
            catch (Exception exp)
            {
                throw exp;
            }