protected void Page_Load(object sender, EventArgs e) { this.RegisterAsyncTask( new PageAsyncTask( async ct => { IAuthorizationState authorization = await googleClient.ProcessUserAuthorizationAsync(new HttpRequestWrapper(Request), ct); if (authorization == null) { // Kick off authorization request var request = await googleClient.PrepareRequestUserAuthorizationAsync(cancellationToken: ct); await request.SendAsync(new HttpContextWrapper(Context), ct); this.Context.Response.End(); // alternatively you can ask for more information // googleClient.RequestUserAuthorization(scope: new[] { GoogleClient.Scopes.UserInfo.Profile, GoogleClient.Scopes.UserInfo.Email }); } else { IOAuth2Graph oauth2Graph = await googleClient.GetGraphAsync(authorization, cancellationToken: ct); this.nameLabel.Text = HttpUtility.HtmlEncode(oauth2Graph.Name); } })); }