Question

I have the following problem:

I am adding an element to a favorites list (List<Item>) through a ContextMenu. Each Item has a derived property IsFavorite that changes depending on the favorites list – like so:

public bool IsFavorite
{
    get { return ItemController.FavoriteList.Contains( this ); }
}

When I add something (or delete it) from the ContextMenu, the ContextMenu must be immediately updated.

Now, I know this is possible through using an ObservableCollection, but due to a few factors out of my control, I must make due with List objects. Now, is there any way I can get this to refresh?

Answer 1

public void DeleteFromFavorites(Item item)
{
    Item itemInMainList = MainList.First(item);
    itemInMainList.Refresh();
}

Item.cs:

public bool IsFavorite
{
    get { return ItemController.FavoriteList.Contains( this ); }
}

public void Refresh()
{
    NotifyPropertyChanged("IsFavorite");
}