google api - DotNetOpenAuth OAuth authorization using popup window in ASP.Net -

i need use popup window google oauth authentication. using dotnetopenauth library authentication , working on same page. how can on popup window. have around googling , have found few , 1 of them " specify request parameters in dotnetopenauth 4" way using library don't know can set popup window.

this code.

private string accesstoken { { return (string)session["googleaccesstoken"]; } set { session["googleaccesstoken"] = value; } }

    private static readonly googleclient googleclient = new googleclient     {         clientidentifier = configurationmanager.appsettings["googleconsumerkey"],         clientcredentialapplicator = clientcredentialapplicator.postparameter(configurationmanager.appsettings["googleconsumersecret"]),     };       protected void page_load(object sender, eventargs e)     {                                 if (googleclient != null)         {              if (!ispostback)             {                 var authorization = googleclient.processuserauthorization();                 if (authorization != null)                 {                     this.accesstoken = authorization.accesstoken;                 }                 else if (this.accesstoken == null)                 {                     googleclient.requestuserauthorization(scope: new[] { googleclient.scopes.webmaster.siteverification, googleclient.scopes.webmaster.webmastertools });                  }             }         }      }   private static readonly authorizationserverdescription googledescription = new authorizationserverdescription {     tokenendpoint = new uri("https://accounts.google.com/o/oauth2/token"),     authorizationendpoint = new uri("https://accounts.google.com/o/oauth2/auth"),        protocolversion = protocolversion.v20,             }; 

could please me on (i new asp.net)? thanks

if want library has support client-side instrumentation, including opening popup windows result of button click, might want javascript api:

https://developers.google.com/api-client-library/javascript/features/authentication