public class Node
        {
            public bool bookmark { get; set; }

<HierarchicalDataTemplate ItemsSource="{Binding collection_node}">
                            <StackPanel Orientation="Horizontal">

                                <TextBlock Text="{Binding name_}">
                                    <TextBlock.ContextMenu>

                                    </TextBlock.ContextMenu>
                                </TextBlock>
                            </StackPanel>
                        </HierarchicalDataTemplate>
                    </TreeView.ItemTemplate>
                </TreeView>