Bind TreeViewItem.IsEnabled to ViewModel property for each TreeViewItem

Question

I have a ViewModel which contains an observable collection of items called AllNodesAndEntries. Each item has a boolean property IsEnabled. Now I want to show the items in a TreeView and bind the IsEnabled property of each TreeViewItem to the IsEnabled property of its underlying item of the ViewModel. How do I do that?

Here is my TreeView. There are two different types of items (Node and Entry), so I have one hierarchical and one normal data template.

<TreeView ItemsSource="{Binding AllNodesAndEntries}">
        <TreeView.Resources>
            <HierarchicalDataTemplate ItemsSource="{Binding Children}" DataType="{x:Type local:Node}">
                <TextBlock Text="{Binding Name}"/>
            </HierarchicalDataTemplate>
            <DataTemplate DataType="{x:Type local:Entry}">
                <TextBlock Text="{Binding Name}""/>
            </DataTemplate>
        </TreeView.Resources>
        <TreeView.ItemContainerStyle>
            <Style TargetType="{x:Type TreeViewItem}">
                <!-- How do I bind to TreeViewItem.IsEnabled to IsEnabled? -->
            </Style>
        </TreeView.ItemContainerStyle>
    </TreeView>

It seems I cannot do it inside TreeView.ItemContainerStyle, because there I can only define setters. But setters don't allow binding the value...

Answer 1

Use the setter to bind the "IsEnabled" property to your "IsEnabled" item property of each TreeViewItem.

<TreeView.ItemContainerStyle>
    <Style TargetType="{x:Type TreeViewItem}">
        <Setter Property="IsEnabled" Value="{Binding IsEnabled}"/>
    </Style>
 </TreeView.ItemContainerStyle>