ASP.NET微信支付功能开发以及代码，让你方便快捷的为你的微网站接入支付功能。下面是一个微信网站支付的DEMO，包含完整的支付流程。

代码片段：

protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                string strBillNo = Interface_WxPay.getTimestamp();
                string strWeixin_OpenID = "";
                string strCode = Request["code"] == null ? "" : Request["code"];
                if (string.IsNullOrEmpty(strCode))
                {
                    //参数需要自己处理
                    string _OAuth_Url = Interface_WxPay.OAuth2_GetUrl_Pay(Request.Url.ToString());

                    Response.Redirect(_OAuth_Url);
                    return;
                }
                else
                {
                    ReturnValue retValue = Interface_WxPay.OAuth2_Access_Token(strCode);

                    if (retValue.HasError)
                    {
                        Response.Write("获取code失败：" + retValue.Message);
                        return;
                    }
                    strWeixin_OpenID = retValue.GetStringValue("Weixin_OpenID");
                    string strWeixin_Token = retValue.GetStringValue("Weixin_Token");

                    if (string.IsNullOrEmpty(strWeixin_OpenID))
                    {
                        Response.Write("openid出错");
                        return;
                    }
                }

                string _Pay_Package = Interface_WxPay.Get_RequestHtml(strWeixin_OpenID, strBillNo, 0.01M, "测试", "hb_store");

                //微信jspai支付
                if (_Pay_Package.Length > 0)
                {
                    wx_packageValue = _Pay_Package;
                }
            }
        }

下载Demo：wxPayDemo.rar