private void GenerateContents()
        {
            this.Contents = new ObservableCollection <IFitnessContent>();
            IFitnessContent loginScreenViewModel = new LoginScreenViewModel();

            this.Contents.Add(loginScreenViewModel);
            this.SelectedContent = this.Contents.First();
        }
        public void SetUserToProfile(User user)
        {
            UserProfileViewModel userProfileViewModel = new UserProfileViewModel();

            userProfileViewModel.User = user;
            this.Contents.Add(userProfileViewModel);
            this.selectedContent = this.Contents.Last();
            this.Contents.Remove(this.Contents.First());
            addHeader(userProfileViewModel.Header);
            SetAdminToProfile(user);
        }