<!-- Window -->
  <ScrollViewer VerticalScrollBarVisibility="Visible">
        <Grid>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*" />
                <ColumnDefinition Width="Auto"/>
                <ColumnDefinition Width="*" />
            </Grid.ColumnDefinitions>

            <TreeView Grid.Column="0" ItemsSource="{Binding Path=TreeNodesLeft}" >
                <TreeView.ItemTemplate>
                    <HierarchicalDataTemplate ItemsSource="{Binding ChildNodes}" >
                        <local:TreeNodeView />
                    </HierarchicalDataTemplate>
                </TreeView.ItemTemplate>
                <!--styles -->
            </TreeView>

            <Grid Grid.Column="1" >
                <local:ConnectionView DataContext="{Binding Path=Connections}" />
            </Grid>

            <TreeView Grid.Column="2" ItemsSource="{Binding Path=TreeNodesRight}">
                <TreeView.ItemTemplate>
                    <HierarchicalDataTemplate ItemsSource="{Binding ChildNodes}" >
                        <local:TreeNodeView />
                    </HierarchicalDataTemplate>
                </TreeView.ItemTemplate>
                <!--styles -->
            </TreeView>
        </Grid>
    </ScrollViewer>
    <!-- Window -->