async void Handle_Next(object sender, EventArgs e) { //TODO: planguage,address,zipcode,ssn,not null or empty if (FNameEntry.Text.IsNullOrEmpty() && LNameEntry.Text.IsNullOrEmpty()) { await DisplayAlert("Notice", "Please fill all required information box.", "OK"); } else { if (!uih.UInfoIDIsNullOrEmpty()) { await Navigation.PushAsync(new SignUpAddPage()); } else { FName = FNameEntry.Text; LName = LNameEntry.Text; Email = EmailEntry.Text; PLanguage = FlanPicker.SelectedItem.ToString(); if (Email.IsNullOrEmpty()) { Email = "*****@*****.**"; } uih.CreateUserInfo(FName, LName, Email, PLanguage); //uih.UpdateHelperSSN(HelperSSN); uAccess.SetChatID(); await Navigation.PushAsync(new SignUpAddPage()); } } }