Xamarin Forms Model Refresh Issue - xamarin.forms

Question

Hi Xamarin Developers,
In one of the class I am having a listView and I am getting the Data From ViewModel. So When user is pressing header I am expanding the list and I am changing the value of expand Variable.. When I am loading the page for next time, then also that expand Variable. value is still true and by default the list is expanded. Can anybody tell me how to resetViewModel on every-time page loads??
My Model Class.
public class CourseCatalogModel : ObservableCollection<DashboardCard>, INotifyPropertyChanged
{
private bool _expanded;
public string Title { get; set; }
private int _dataCount;
public int DataCount
{
get { return _dataCount; }
set
{
if (_dataCount != value)
{
_dataCount = value;
OnPropertyChanged("StateIcon");
OnPropertyChanged("TitleColor");
}
}
}
public string TitleColor
{
get
{
if (DataCount == 0)
{
return "#FFAEB2B5";
}
return "#FF00588A";
}
}
public bool Expanded
{
get { return _expanded; }
set
{
if (_expanded != value)
{
_expanded = value;
OnPropertyChanged("Expanded");
OnPropertyChanged("StateIcon");
}
}
}
public string StateIcon
{
get
{
if (DataCount == 0)
{
return "expand_empty";
}
return Expanded ? "expand_iCon.png" : "collapse_icon.png";
}
}
public CourseCatalogModel(string title, bool expanded = true)
{
Title = title;
Expanded = expanded;
}
public static ObservableCollection<CourseCatalogModel> CourseCatalogAll { private set; get; }
public static ObservableCollection<CourseCatalogModel> CourseCatalogRequired { private set; get; }
public static ObservableCollection<CourseCatalogModel> CourseCatalogNotRequired { private set; get; }
static CourseCatalogModel()
{
// Course Awaiting Approvel...
CourseCatalogModel awaitingApprovel = new CourseCatalogModel("Awaiting Approval", false);
var awaitingCards = CourseCatalogModuleHelper.GetAwaitingApprovels();
foreach (var dashboardCard in awaitingCards)
{
awaitingApprovel.Add(dashboardCard);
}
// Course Pending Courses...
CourseCatalogModel pendingCourses = new CourseCatalogModel("Pending Courses", false);
var pendingCourseCards = CourseCatalogModuleHelper.GetPendingCourses();
foreach (var dashboardCard in pendingCourseCards)
{
pendingCourses.Add(dashboardCard);
}
// Course Completed Courses...
CourseCatalogModel completedCourses = new CourseCatalogModel("Completed Courses", false);
var completedCourseCards = CourseCatalogModuleHelper.GetCompletedCourses();
foreach (var dashboardCard in completedCourseCards)
{
completedCourses.Add(dashboardCard);
}
ObservableCollection<CourseCatalogModel>
CourseCatalogdata = new ObservableCollection<CourseCatalogModel>();
CourseCatalogdata.Add(awaitingApprovel);
CourseCatalogdata.Add(pendingCourses);
CourseCatalogdata.Add(completedCourses);
CourseCatalogAll = CourseCatalogdata;
GetRequiredCourseCatalogCards();
GetNotRequiredCourseCatalogCards();
}
private static void GetRequiredCourseCatalogCards()
{
// Course Awaiting Approvel...
CourseCatalogModel awaitingApprovel = new CourseCatalogModel("Awaiting Approval", false);
var awaitingCards = CourseCatalogModuleHelper.GetAwaitingApprovels(AppConstants.CourseFilterRequired);
foreach (var dashboardCard in awaitingCards)
{
awaitingApprovel.Add(dashboardCard);
}
// Course Pending Courses...
CourseCatalogModel pendingCourses = new CourseCatalogModel("Pending Courses", false);
var pendingCourseCards = CourseCatalogModuleHelper.GetPendingCourses(AppConstants.CourseFilterRequired);
foreach (var dashboardCard in pendingCourseCards)
{
pendingCourses.Add(dashboardCard);
}
// Course Completed Courses...
CourseCatalogModel completedCourses = new CourseCatalogModel("Completed Courses", false);
var completedCourseCards = CourseCatalogModuleHelper.GetCompletedCourses(AppConstants.CourseFilterRequired);
foreach (var dashboardCard in completedCourseCards)
{
completedCourses.Add(dashboardCard);
}
ObservableCollection<CourseCatalogModel>
CourseCatalogdata = new ObservableCollection<CourseCatalogModel>();
CourseCatalogdata.Add(awaitingApprovel);
CourseCatalogdata.Add(pendingCourses);
CourseCatalogdata.Add(completedCourses);
CourseCatalogRequired = CourseCatalogdata;
}
private static void GetNotRequiredCourseCatalogCards()
{
// Course Awaiting Approvel...
CourseCatalogModel awaitingApprovel = new CourseCatalogModel("Awaiting Approval", false);
var awaitingCards = CourseCatalogModuleHelper.GetAwaitingApprovels(AppConstants.CourseFilterNotRequired);
foreach (var dashboardCard in awaitingCards)
{
awaitingApprovel.Add(dashboardCard);
}
// Course Pending Courses...
CourseCatalogModel pendingCourses = new CourseCatalogModel("Pending Courses", false);
var pendingCourseCards = CourseCatalogModuleHelper.GetPendingCourses(AppConstants.CourseFilterNotRequired);
foreach (var dashboardCard in pendingCourseCards)
{
pendingCourses.Add(dashboardCard);
}
// Course Completed Courses...
CourseCatalogModel completedCourses = new CourseCatalogModel("Completed Courses", false);
var completedCourseCards = CourseCatalogModuleHelper.GetCompletedCourses(AppConstants.CourseFilterNotRequired);
foreach (var dashboardCard in completedCourseCards)
{
completedCourses.Add(dashboardCard);
}
ObservableCollection<CourseCatalogModel>
CourseCatalogdata = new ObservableCollection<CourseCatalogModel>();
CourseCatalogdata.Add(awaitingApprovel);
CourseCatalogdata.Add(pendingCourses);
CourseCatalogdata.Add(completedCourses);
CourseCatalogNotRequired = CourseCatalogdata;
}
public event PropertyChangedEventHandler PropertyChanged;
protected virtual void OnPropertyChanged(string propertyName)
{
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
}
And in my page , this is how I am changing Value
public partial class CourseCatalogBaseClass : ContentPage
{
public ObservableCollection<CourseCatalogModel> _allGroups;
ObservableCollection<CourseCatalogModel> _expandedGroups;
List<DashboardCard> allListData;
ObservableCollection<DashboardCard> searchListData;
private string screenLabelString = string.Empty;
public ObservableCollection<FilterPopupModel> courseFilterPopupModels = new ObservableCollection<FilterPopupModel>();
public CourseCatalogBaseClass(bool isFromQualifications = false)
{
InitializeComponent();
if (isFromQualifications)
{
screenLabel.Text = "My Qualifications";
screenLabelString = screenLabel.Text;
}
allListData = App.DashboardResponse.TrainingContentCards;
CourseCatalogSearchListView.IsVisible = false;
_allGroups = CourseCatalogModel.CourseCatalogAll;
UpdateCourseCatalagListContent();
InitilizeFilters();
}
private void InitilizeFilters()
{
courseFilterPopupModels.Add(new FilterPopupModel()
{Title = "All Classes", TitleColor = Color.FromHex("#00588A")});
courseFilterPopupModels.Add(new FilterPopupModel()
{Title = "Required", TitleColor = Color.FromHex("#686868")});
courseFilterPopupModels.Add(new FilterPopupModel()
{Title = "Not Required", TitleColor = Color.FromHex("#686868")});
courseFilterPopupModels.Add(new FilterPopupModel() {Title = "Help", TitleColor = Color.FromHex("#686868")});
}
private void CourseListHeaderTapped(object sender, EventArgs args)
{
int selectedIndex = _expandedGroups.IndexOf(
((CourseCatalogModel) ((Button) sender).CommandParameter));
_allGroups[selectedIndex].Expanded = !_allGroups[selectedIndex].Expanded;
UpdateCourseCatalagListContent();
}
void Handle_Search_Bar_TextChanged(object sender, Xamarin.Forms.TextChangedEventArgs e)
{
var entry = (Entry) sender;
searchListData = new ObservableCollection<DashboardCard>();
if (string.IsNullOrWhiteSpace(entry.Text))
{
screenLabel.Text = screenLabelString;
CourseCatalogSearchListView.IsVisible = false;
CourseCatalogListView.IsVisible = true;
}
else
{
screenLabel.Text = "Search Course";
foreach (DashboardCard card in allListData)
{
var courseCode = card.Course;
if (courseCode.ToLower().Contains(entry.Text.ToLower()))
{
searchListData.Add(card);
}
}
searchListData = new ObservableCollection<DashboardCard>(allListData.Where(i =>
(i is DashboardCard && (((DashboardCard) i).Course.ToLower().Contains(entry.Text.ToLower())))));
CourseCatalogSearchListView.ItemsSource = searchListData;
CourseCatalogSearchListView.IsVisible = true;
CourseCatalogListView.IsVisible = false;
}
Console.WriteLine(searchListData.Count);
}
void Menu_Button_Clicked(object sender, System.EventArgs e)
{
Navigation.PushModalAsync(new MenuPage());
//
}
async void Filter_Handle_Clicked(object sender, System.EventArgs e)
{
if (!CourseCatalogSearchListView.IsVisible)
{
var page = new CourseCatalogFilterPopup(this);
await PopupNavigation.Instance.PushAsync(page);
}
else
{
await DisplayAlert(AppConstants.AppName, "Please Close the Search to access Filter",
AppConstants.OK);
}
}
async void Filter_three_dot_Handle_Clicked(object sender, System.EventArgs e)
{
var page = new CourseCatalogMorePopup();
await PopupNavigation.Instance.PushAsync(page);
}
async void Course_List_ItemSelected(object sender, Xamarin.Forms.SelectedItemChangedEventArgs e)
{
DashboardCard dashboardCard = (DashboardCard)e.SelectedItem;
if (!dashboardCard.Status.Equals("TAKEN") &&
!dashboardCard.Status.Equals("EQUIV") &&
!dashboardCard.Status.Equals("SKILL") &&
!dashboardCard.Pending.Equals("WRA") &&
dashboardCard.SelfTrain.Equals("Y"))
{
var page = new SelfTrainBasePage(dashboardCard);
await Navigation.PushModalAsync(page);
}
else
{
await DisplayAlert("iSOTrain", "Yet to be implemented.", "OK");
}
}
async void Course_Search_List_ItemSelected(object sender, Xamarin.Forms.SelectedItemChangedEventArgs e)
{
DashboardCard dashboardCard = (DashboardCard)e.SelectedItem;
if (!dashboardCard.Status.Equals("TAKEN") &&
!dashboardCard.Status.Equals("EQUIV") &&
!dashboardCard.Status.Equals("SKILL") &&
!dashboardCard.Pending.Equals("WRA") &&
dashboardCard.SelfTrain.Equals("Y"))
{
var page = new SelfTrainBasePage(dashboardCard);
await Navigation.PushModalAsync(page);
}
else
{
await DisplayAlert("iSOTrain", "Yet to be implemented.", "OK");
}
}
public void UpdateCourseCatalagListContent()
{
_expandedGroups = new ObservableCollection<CourseCatalogModel>();
foreach (CourseCatalogModel group in _allGroups)
{
//Create new FoodGroups so we do not alter original list
CourseCatalogModel newGroup = new CourseCatalogModel(group.Title, group.Expanded);
newGroup.DataCount = group.Count;
//Add the count of food items for Lits Header Titles to use
if (group.Expanded)
{
foreach (DashboardCard dataModel in group)
{
newGroup.Add(dataModel);
}
}
_expandedGroups.Add(newGroup);
}
CourseCatalogListView.ItemsSource = _expandedGroups;
}
}

Answer 1

Can anybody tell me how to resetViewModel on every-time page loads??
You can reset the data in OnAppearing every-time page loads, I would recommend two ways to refresh data.
1.reset models in _allGroups
2.reset _allGroups
public partial class MainPage : ContentPage
{
public ObservableCollection<CourseCatalogModel> _allGroups;
public MainPage()
{
InitializeComponent();
_allGroups = new ObservableCollection<CourseCatalogModel>();
}
protected override void OnAppearing()
{
base.OnAppearing();
//1. reset your properties in _allGroups
foreach (var CourseCatalogModel in _allGroups)
{
CourseCatalogModel.Expanded = false;
//...reset if you have other properties
}
//2.create a new _allGroup everytime load page
_allGroups = new ObservableCollection<CourseCatalogModel>();
//.... Add data to _allGroups
_allGroups.Add(new CourseCatalogModel());
...
}
}
Try to initialize your _allGroups like below:
ObservableCollection<CourseCatalogModel>
_allGroups = new ObservableCollection<CourseCatalogModel>();
foreach (var CourseCatalogModel in CourseCatalogModel.CourseCatalogAll)
{
_allGroups.Add(CourseCatalogModel);
}

Answer 2

Finally I nailed it.. The Problem was with static method. My Model class method I created as static and they were getting called only one time and thats why data was not refreshing.
Heres the code of Model Class .
public class CourseCatalogModel : ObservableCollection<DashboardCard>, INotifyPropertyChanged
{
private bool _expanded;
public string Title { get; set; }
private int _dataCount;
public int DataCount
{
get { return _dataCount; }
set
{
if (_dataCount != value)
{
_dataCount = value;
OnPropertyChanged("StateIcon");
OnPropertyChanged("TitleColor");
}
}
}
public string TitleColor
{
get
{
if (DataCount == 0)
{
return "#FFAEB2B5";
}
return "#FF00588A";
}
}
public bool Expanded
{
get { return _expanded; }
set
{
if (_expanded != value)
{
_expanded = value;
OnPropertyChanged("Expanded");
OnPropertyChanged("StateIcon");
}
}
}
public string StateIcon
{
get
{
if (DataCount == 0)
{
return "expand_empty";
}
return Expanded ? "expand_iCon.png" : "collapse_icon.png";
}
}
public CourseCatalogModel(string title, bool expanded = true)
{
Title = title;
Expanded = expanded;
}
public ObservableCollection<CourseCatalogModel> CourseCatalogAll { private set; get; }
public ObservableCollection<CourseCatalogModel> CourseCatalogRequired { private set; get; }
public ObservableCollection<CourseCatalogModel> CourseCatalogNotRequired { private set; get; }
public CourseCatalogModel()
{
// Course Awaiting Approvel...
CourseCatalogModel awaitingApprovel = new CourseCatalogModel("Awaiting Approval", false);
var awaitingCards = CourseCatalogModuleHelper.GetAwaitingApprovels();
foreach (var dashboardCard in awaitingCards)
{
awaitingApprovel.Add(dashboardCard);
}
// Course Pending Courses...
CourseCatalogModel pendingCourses = new CourseCatalogModel("Pending Courses", false);
var pendingCourseCards = CourseCatalogModuleHelper.GetPendingCourses();
foreach (var dashboardCard in pendingCourseCards)
{
pendingCourses.Add(dashboardCard);
}
// Course Completed Courses...
CourseCatalogModel completedCourses = new CourseCatalogModel("Completed Courses", false);
var completedCourseCards = CourseCatalogModuleHelper.GetCompletedCourses();
foreach (var dashboardCard in completedCourseCards)
{
completedCourses.Add(dashboardCard);
}
ObservableCollection<CourseCatalogModel>
CourseCatalogdata = new ObservableCollection<CourseCatalogModel>();
CourseCatalogdata.Add(awaitingApprovel);
CourseCatalogdata.Add(pendingCourses);
CourseCatalogdata.Add(completedCourses);
CourseCatalogAll = new ObservableCollection<CourseCatalogModel>();
CourseCatalogAll = CourseCatalogdata;
GetRequiredCourseCatalogCards();
GetNotRequiredCourseCatalogCards();
}
private void GetRequiredCourseCatalogCards()
{
// Course Awaiting Approvel...
CourseCatalogModel awaitingApprovel = new CourseCatalogModel("Awaiting Approval", false);
var awaitingCards = CourseCatalogModuleHelper.GetAwaitingApprovels(AppConstants.CourseFilterRequired);
foreach (var dashboardCard in awaitingCards)
{
awaitingApprovel.Add(dashboardCard);
}
// Course Pending Courses...
CourseCatalogModel pendingCourses = new CourseCatalogModel("Pending Courses", false);
var pendingCourseCards = CourseCatalogModuleHelper.GetPendingCourses(AppConstants.CourseFilterRequired);
foreach (var dashboardCard in pendingCourseCards)
{
pendingCourses.Add(dashboardCard);
}
// Course Completed Courses...
CourseCatalogModel completedCourses = new CourseCatalogModel("Completed Courses", false);
var completedCourseCards = CourseCatalogModuleHelper.GetCompletedCourses(AppConstants.CourseFilterRequired);
foreach (var dashboardCard in completedCourseCards)
{
completedCourses.Add(dashboardCard);
}
ObservableCollection<CourseCatalogModel>
CourseCatalogdata = new ObservableCollection<CourseCatalogModel>();
CourseCatalogdata.Add(awaitingApprovel);
CourseCatalogdata.Add(pendingCourses);
CourseCatalogdata.Add(completedCourses);
CourseCatalogRequired = CourseCatalogdata;
}
private void GetNotRequiredCourseCatalogCards()
{
// Course Awaiting Approvel...
CourseCatalogModel awaitingApprovel = new CourseCatalogModel("Awaiting Approval", false);
var awaitingCards = CourseCatalogModuleHelper.GetAwaitingApprovels(AppConstants.CourseFilterNotRequired);
foreach (var dashboardCard in awaitingCards)
{
awaitingApprovel.Add(dashboardCard);
}
// Course Pending Courses...
CourseCatalogModel pendingCourses = new CourseCatalogModel("Pending Courses", false);
var pendingCourseCards = CourseCatalogModuleHelper.GetPendingCourses(AppConstants.CourseFilterNotRequired);
foreach (var dashboardCard in pendingCourseCards)
{
pendingCourses.Add(dashboardCard);
}
// Course Completed Courses...
CourseCatalogModel completedCourses = new CourseCatalogModel("Completed Courses", false);
var completedCourseCards = CourseCatalogModuleHelper.GetCompletedCourses(AppConstants.CourseFilterNotRequired);
foreach (var dashboardCard in completedCourseCards)
{
completedCourses.Add(dashboardCard);
}
ObservableCollection<CourseCatalogModel>
CourseCatalogdata = new ObservableCollection<CourseCatalogModel>();
CourseCatalogdata.Add(awaitingApprovel);
CourseCatalogdata.Add(pendingCourses);
CourseCatalogdata.Add(completedCourses);
CourseCatalogNotRequired = CourseCatalogdata;
}
public event PropertyChangedEventHandler PropertyChanged;
protected virtual void OnPropertyChanged(string propertyName)
{
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
}
Here is My class
public partial class CourseCatalogBaseClass : ContentPage
{
public ObservableCollection<CourseCatalogModel> _allGroups = new ObservableCollection<CourseCatalogModel>();
ObservableCollection<CourseCatalogModel> _expandedGroups = new ObservableCollection<CourseCatalogModel>();
List<DashboardCard> allListData = new List<DashboardCard>();
CourseCatalogModel courseCatalogModel = new CourseCatalogModel();
ObservableCollection<DashboardCard> searchListData = new ObservableCollection<DashboardCard>();
private string screenLabelString = string.Empty;
public ObservableCollection<FilterPopupModel> courseFilterPopupModels = new ObservableCollection<FilterPopupModel>();
public CourseCatalogBaseClass(bool isFromQualifications = false)
{
InitializeComponent();
if (isFromQualifications)
{
screenLabel.Text = "My Qualifications";
screenLabelString = screenLabel.Text;
}
allListData = App.DashboardResponse.TrainingContentCards;
CourseCatalogSearchListView.IsVisible = false;
//2.create a new _allGroup everytime load page
_allGroups = new ObservableCollection<CourseCatalogModel>();
//.... Add data to _allGroups
foreach (CourseCatalogModel CourseCatalogModel in courseCatalogModel.CourseCatalogAll)
{
_allGroups.Add(CourseCatalogModel);
}
//1. reset your properties in _allGroups
foreach (var CourseCatalogModel in _allGroups)
{
CourseCatalogModel.Expanded = false;
//...reset if you have other properties
}
CourseCatalogSearchListView.IsVisible = false;
UpdateCourseCatalagListContent();
InitilizeFilters();
}
protected override void OnAppearing()
{
base.OnAppearing();
}
private void InitilizeFilters()
{
courseFilterPopupModels.Add(new FilterPopupModel()
{ Title = "All Classes", TitleColor = Color.FromHex("#00588A") });
courseFilterPopupModels.Add(new FilterPopupModel()
{ Title = "Required", TitleColor = Color.FromHex("#686868") });
courseFilterPopupModels.Add(new FilterPopupModel()
{ Title = "Not Required", TitleColor = Color.FromHex("#686868") });
courseFilterPopupModels.Add(new FilterPopupModel() { Title = "Help", TitleColor = Color.FromHex("#686868") });
}
private void CourseListHeaderTapped(object sender, EventArgs args)
{
int selectedIndex = _expandedGroups.IndexOf(
((CourseCatalogModel)((Button)sender).CommandParameter));
_allGroups[selectedIndex].Expanded = !_allGroups[selectedIndex].Expanded;
UpdateCourseCatalagListContent();
}
void Handle_Search_Bar_TextChanged(object sender, Xamarin.Forms.TextChangedEventArgs e)
{
var entry = (Entry)sender;
searchListData = new ObservableCollection<DashboardCard>();
if (string.IsNullOrWhiteSpace(entry.Text))
{
screenLabel.Text = screenLabelString;
CourseCatalogSearchListView.IsVisible = false;
CourseCatalogListView.IsVisible = true;
}
else
{
screenLabel.Text = "Search Course";
foreach (DashboardCard card in allListData)
{
var courseCode = card.Course;
if (courseCode.ToLower().Contains(entry.Text.ToLower()))
{
searchListData.Add(card);
}
}
searchListData = new ObservableCollection<DashboardCard>(allListData.Where(i =>
(i is DashboardCard && (((DashboardCard)i).Course.ToLower().Contains(entry.Text.ToLower())))));
CourseCatalogSearchListView.ItemsSource = searchListData;
CourseCatalogSearchListView.IsVisible = true;
CourseCatalogListView.IsVisible = false;
}
Console.WriteLine(searchListData.Count);
}
void Menu_Button_Clicked(object sender, System.EventArgs e)
{
Navigation.PushModalAsync(new MenuPage());
//
}
async void Filter_Handle_Clicked(object sender, System.EventArgs e)
{
if (!CourseCatalogSearchListView.IsVisible)
{
var page = new CourseCatalogFilterPopup(this);
await PopupNavigation.Instance.PushAsync(page);
}
else
{
await DisplayAlert(AppConstants.AppName, "Please Close the Search to access Filter",
AppConstants.OK);
}
}
async void Filter_three_dot_Handle_Clicked(object sender, System.EventArgs e)
{
var page = new CourseCatalogMorePopup();
await PopupNavigation.Instance.PushAsync(page);
}
async void Course_List_ItemSelected(object sender, Xamarin.Forms.SelectedItemChangedEventArgs e)
{
DashboardCard dashboardCard = (DashboardCard)e.SelectedItem;
if (!dashboardCard.Status.Equals("TAKEN") &&
!dashboardCard.Status.Equals("EQUIV") &&
!dashboardCard.Status.Equals("SKILL") &&
!dashboardCard.Pending.Equals("WRA") &&
dashboardCard.SelfTrain.Equals("Y"))
{
var page = new SelfTrainBasePage(dashboardCard);
await Navigation.PushModalAsync(page);
}
else
{
await DisplayAlert("iSOTrain", "Yet to be implemented.", "OK");
}
}
async void Course_Search_List_ItemSelected(object sender, Xamarin.Forms.SelectedItemChangedEventArgs e)
{
DashboardCard dashboardCard = (DashboardCard)e.SelectedItem;
if (!dashboardCard.Status.Equals("TAKEN") &&
!dashboardCard.Status.Equals("EQUIV") &&
!dashboardCard.Status.Equals("SKILL") &&
!dashboardCard.Pending.Equals("WRA") &&
dashboardCard.SelfTrain.Equals("Y"))
{
var page = new SelfTrainBasePage(dashboardCard);
await Navigation.PushModalAsync(page);
}
else
{
await DisplayAlert("iSOTrain", "Yet to be implemented.", "OK");
}
}
public void UpdateCourseCatalagListContent()
{
_expandedGroups = new ObservableCollection<CourseCatalogModel>();
foreach (CourseCatalogModel group in _allGroups)
{
//Create new FoodGroups so we do not alter original list
CourseCatalogModel newGroup = new CourseCatalogModel(group.Title, group.Expanded);
newGroup.DataCount = group.Count;
//Add the count of food items for Lits Header Titles to use
if (group.Expanded)
{
foreach (DashboardCard dataModel in group)
{
newGroup.Add(dataModel);
}
}
_expandedGroups.Add(newGroup);
}
CourseCatalogListView.ItemsSource = _expandedGroups;
}
}