Save WPF TreeView state on data reload

Question

I am using TreeView to display my data in UI. Now my application refreshes every 5 seconds so that it shows the most current data. Is there a way I can save my expanded stat

Answer 1

I solved that problem by adding IsExpanded and IsSelected properties to the object that my TreeView was bound to

<Style TargetType="{x:Type TreeViewItem}">
    <Setter Property="IsExpanded" Value="{Binding IsExpanded, Mode=TwoWay}" />
    <Setter Property="IsSelected" Value="{Binding IsSelected, Mode=TwoWay}" />
</Style>