public IActionResult GetCode()

        {

            B_Third_Info thirdBll = new B_Third_Info();

            M_Third_Info wxInfo = thirdBll.SelModelByName("Wechat");

            if (string.IsNullOrEmpty(Request.Query["code"]))//微信登录操作

            {

                string state = function.GetRandomString(8).ToLower();

                session.SetString("state", state);

                string url = "https://open.weixin.qq.com/connect/qrconnect?appid=" + wxInfo.Key + "&redirect_uri=" + HttpUtility.UrlEncode(wxInfo.CallBackUrl) + "&response_type=code&scope=snsapi_login&state=" + state + "&connect_redirect=1#wechat_redirect".Trim();

                return Redirect(url);

            }

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授权回调域：www.yanyouyi.com/API/WechatLogin

微信开放平台的回调域和网站回调域是一样的！

以上代码是WechatLogin这个里的代码！

以上是相关代码，请高手给予指点。感谢！！！