async private void CreateClassClick(object sender, EventArgs e) { if (NameForm.Text == null) { var toastmessage = "Need to fill name"; DependencyService.Get <ToastMessage>().ShortTime(toastmessage); } else { var characterClassApiServise = new CharacterClassApiServises(); var content = await characterClassApiServise.AddCharacterClassAsync(NameForm.Text, DescriptionForm.Text); if (content != null) { await Shell.Current.GoToAsync(".."); } else { var toastmessage = "Not Created"; DependencyService.Get <ToastMessage>().ShortTime(toastmessage); } } }