private void HandleRequestAuthenticationCompleted(object userState)
 {
     if (!AuthorizationNavigationManager.IsAuthorized(this.GetCurrentUri(), this._frame.Content))
     {
         // If the user is still not authorized, he needs to be redirected
         this.Redirect();
     }
 }
        private void AuthorizeFrameContent()
        {
            if (!AuthorizationNavigationManager.IsAuthorized(this.GetCurrentUri(), this._frame.Content))
            {
                AuthorizationNavigationMode navigationMode = this.GetContentNavigationMode(this._frame.Content);

                if (WebContextBase.Current.Authentication.User.Identity.IsAuthenticated ||
                    (navigationMode == AuthorizationNavigationMode.Redirect))
                {
                    // If the user is authenticated but not authorized, he needs to be redirected
                    this.Redirect();
                }
                else if (navigationMode == AuthorizationNavigationMode.Prompt)
                {
                    if (Authorization.Prompter == null)
                    {
                        throw new InvalidOperationException("Authorization.Prompter cannot be null when the navigationMode is 'Prompt'.");
                    }
                    // If the user is not authenticated, we need to prompt for re-authentication or redirect
                    Authorization.Prompter.RequestAuthentication(this.HandleRequestAuthenticationCompleted, null);
                }
            }
        }