.net QQ登录实现,qq开放登录接入,qq登录集成

点ＱＱ登录按钮调用的方法
private void qqlogin()
     {        //app_id
        string key = "21****";
       //app_id 对应的key pwd
         string secret = "5dedd5c2a88a14b0156d5553b669f3d6";        QzoneSDK.Context.QzoneContext context = new QzoneSDK.Context.QzoneContext(key, secret);
        //回调地址，一般只需填写你网站的域名
         string callbackUrl = "​​​http://www.domain.com/​​​";
         QzoneSDK.OAuth.Tokens.OAuthToken requestToken = context.GetRequestToken(callbackUrl);
         
         //Session["requestToken"] = requestToken;
         //request token, request token secret 需要保存起来        //在demo演示中，直接保存在全局变量中.真实情况需要网站自己处理
        Session["requesttokenkey"] = requestToken.TokenKey;
        Session["requesttokensecret"] = requestToken.TokenSecret;
                 string authenticationUrl = context.GetAuthorizationUrl(requestToken, callbackUrl);
         Session["qqurl"] = authenticationUrl;
         Response.Redirect(authenticationUrl);
     }在回调地址中处理如下：
得到的open_id 跟ＱＱ是一一对应的，但得不到ＱＱ号
protected void QQLoginCallback()
     {
         #region qqlogin
         //处理QQ登录
          
         try
         {
             
             string oauth_token = "";
             string openid = "";
             string oauth_signature = "";
             string oauth_vericode = "";
             string code = "";
             if (Request["oauth_token"] != null)
             {
                 oauth_token = Request["oauth_token"];
             }
             if (Request["code"] != null)
             {
                 code = Request["code"];
             }
             if (Request["openid"] != null)
             {
                 openid = Request["openid"];
                 
                 Response.Redirect("index.aspx");//成功后跳转到的页面
             }
             if (Request["oauth_signature"] != null)
             {
                 oauth_signature = Request["oauth_signature"];
             }
             if (Request["oauth_vericode"] != null)
             {
                 oauth_vericode = Request["oauth_vericode"];
             }
         }
         catch (Exception ex1)
         {
         }        #endregion
     }