what is the max depth limit of radtreeview items

[Todd Millett]

I have a radtreeview with max depth around 100 items, when i keep load on demand enabled after loading almost 60 items on demand it gives an exception. Is this a known limitation?

[mirang]

Any Known Limitation, that we have to live with ?

[Petar Mladenov]

Hi Mirang,

 We are not aware of similar issue in the RadTreeView. Having so much hierarchy levels could lead to serious performance downgrade but not an exceptions.  What is the exception that you have come up with? Is it possible for you to isolate a scenario in a runnable application that reproduces it ? This will be highly appreciated and we would be better able to assist you.

All the best,
Petar Mladenov
the Telerik team

[mirang]

I am using the latest build to test this. Please find my sample code :
XAML code :
<telerik:RadTreeView x:Name="treeView" IsVirtualizing="True" telerik:TreeViewPanel.VirtualizationMode="Hierarchical"
                                 IsLoadOnDemandEnabled="True" LoadOnDemand="treeView_LoadOnDemand">
                <telerik:RadTreeViewItem Header="1" IsLoadOnDemandEnabled="True"/>
            </telerik:RadTreeView>

code behind :

 private void treeView_LoadOnDemand(object sender, Telerik.Windows.RadRoutedEventArgs e)
        {
            RadTreeViewItem item = e.OriginalSource as RadTreeViewItem;
            item.Items.Add(new RadTreeViewItem() { Header = int.Parse(item.Header.ToString()) + 1, IsLoadOnDemandEnabled= true });
            item.IsLoadOnDemandEnabled = false;
            item.IsLoadingOnDemand = false;
            item.BringIntoView();
        }

You will see that after you try expanding 56/57/58 rth item it throws an exception.

[Claudio Duarte]

I have the same problem with a datasource of 63 levels, it is posible to fix this or what can I do to solve this?

[Petar Mladenov]

Hi Claudio Duarte,

 We investigatde this further and it appeared that there is a limitation in the number of nested elements that comes from the Silverlight Framework. This number varies depending of the type of the elements. We made a small test that shows that you cannot nest more than 80 Buttons for example. So, the exception that raises when having 50-60 nested RadTreeViewItems is expected.  
Please accept my apologies for any inconvenience caused previously.

Kind regards,
Petar Mladenov
the Telerik team