TreeView (does not collapse when hinding node)

[Amit]

Hello,
Seems to be facing two probelms with RadTreeView:

1)  When hinding a node in TreeView, nodes space is not collapsed. it hide the node but keep the space there.
2) Collapse and expand method on node does not seems to work.

Can you guys test to see if this is working on your part, if so please provide the example how you are achiving it?

Thanks,
Amit

Node1
    node1.1
    node1.2
Node2 ---------->calling collapse method on this node would nto collapse node.
    node2.1
    node2.2

[Petar Mladenov]

Hi Amit,

I am not really sure what is your scenario, but if in your first point you are referring to setting a Visibility to teh RadTreeViewItems, then I wanted to ask you to try and set the RadTreeViewItems ItemsPanel to a StackPanel, like so:

<Style TargetType="telerik:RadTreeViewItem">
    <Style.Setters>
        <Setter Property="ItemsPanel">
            <Setter.Value>
                <ItemsPanelTemplate>
                    <StackPanel />
                </ItemsPanelTemplate>
            </Setter.Value>
        </Setter>
    </Style.Setters>
</Style>

As for your other point, can you please elaborate on your scenario and how you use the Expand and Collapse methods. You can also check out this demo http://demos.telerik.com/silverlight/#TreeView/FirstLook and examine its source code.

Let us know how it goes.

Best wishes,
Petar Mladenov
the Telerik team

[Amit Patel]

Thanks for the replay!
I will try out the stack panel option. For collapsing I am doing everything via binding, using MVVM pattern.

Thanks,
Amit

[Murray]

Should be

<Style TargetType="telerik:RadTreeView">
    <Style.Setters>
        <Setter Property="ItemsPanel">
            <Setter.Value>
                <ItemsPanelTemplate>
                    <StackPanel />
                </ItemsPanelTemplate>
            </Setter.Value>
        </Setter>
    </Style.Setters>
</Style>