Hello,
I have a Category class which contains Categories property which is a List<Category>. I use MVVM with your OpenAccess ORM. Here is a XAML markup I use to bind tree to data:
<telerik:RadTreeView HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Name="CategoryTree" ItemsSource="{Binding Path=Categories}" SelectedItem="{Binding Path=CurrentCategory, Mode=TwoWay}" SelectionChanged="CategoryTree_SelectionChanged">
<telerik:RadTreeView.ItemTemplate>
<HierarchicalDataTemplate ItemsSource="{Binding Categories}">
<TextBlock Text="{Binding Name}" />
</HierarchicalDataTemplate>
</telerik:RadTreeView.ItemTemplate>
</telerik:RadTreeView>
In CategoryViewModel I have the following method:
protected override void Load()
{
_categories = new ObservableCollection<CategoryBO>();
foreach (Category category in _repositoryCategory.Entities.Where(p => p.ParentCategory == null))
{
CategoryBO tempCategory = category;
if (tempCategory != null)
{
Categories.Add(tempCategory);
}
}
_categoryView = CollectionViewSource.GetDefaultView(Categories);
OnPropertyChanged("CategoriesList");
OnPropertyChanged("CurrentCategory");
}
and this is how I initialize a CategoryBO object:
public static implicit operator CategoryBO(Category category)
{
return new CategoryBO(category);
}
public CategoryBO(Category category)
{
ID = category.CategoryID;
ParentID = category.ParentID;
Name = category.Name;
foreach (ProductBO product in category.Products)
{
_products.Add(product);
}
foreach (Category cat in category.Categories)
{
_categories.Add(cat);
}
}
As you can see, I iterate through root level categories and they all have a Categories property filled with data. But when I try to select child categories from tree, they select visually on the tree but SelectedItem is always null. This happens because in Load() method I have CollectionViewSource.GetDefaultView(Categories) which returns a list which contains only root categories.
How do get SelectedItem?
Thank you.