Filtering problem

[Dan]

I'm trying to implement a filter on a treeview but it doesn't work.

Here is what I do:
1. Get a TreeGrapgh collection over WCF. it is a Collection<Node> where node
looks like:

class Branch
{
    string Name { get; set; }
    NodeCollection Children;
}
class BranchCollection : Collection<Branch>
{
}

Then I create a temple in XAML that uses a HierarchicalDataTemplate:

 

 

 

<TelerikWindowsControls:HierarchicalDataTemplate x:Key="BranchTreeTemplate" ItemsSource="{Binding Children}">

 

 

 

 

<TextBlock HorizontalAlignment="Left" Text="{Binding Name}" AutomationProperties.Name="{Binding Name}" />

 

 

 

 

</TelerikWindowsControls:HierarchicalDataTemplate>

 

in C# code I bind is to ItemSource:

_branchTree = e.Result as BranchTransportCollection;
RADTreeView.Items.Clear();
RADTreeView.ItemsSource = _branchTree;


After that on TextChange even on my text box I do this

            var fl = _branchTree.Where(b => b.Name.IndexOf(_filterText) > -1);
            RADTreeView.ItemsSource = null;
            RADTreeView.ItemsSource = fl;

but this doesn't work as expected. the branches are not filtered, I think I get more branches not less.

I'm confused here. Please help

[Hristo]

Hello Dan,

We couldn't simulate the issue you are experiencing. Can you please take a look at the attached project if our scenario is similar. Also can you modify it or attach you own simple project demonstrating the issue.

Sincerely yours,
Hristo Milyakov
the Telerik team