ArcGISPortalViewer.ViewModel.SignInViewModel.SignInAsync C# (CSharp) Method

        public async Task<bool> SignInAsync()
        {
            IsSigningIn = true;
            try
            {
                bool result = await PortalService.CurrentPortalService.SignIn();
                if (result)
                {
                    // navigate to the main page 
                    (new NavigationService()).Navigate(App.MainPageName);

                    // send a message to populate the data
                    Messenger.Default.Send<PopulateDataMessage>(new PopulateDataMessage());

                    IsSigningIn = false;
                    return true;
                }
            }
            catch
            {
            }

            IsSigningIn = false;
            return false;
        }