WPF Implicit selection of template using DataTemplate, but outside of 'List'

Question

In my project, I have TreeView, which contains a tree of objects of various types (all subclassed from the same superclass).

To the right of my TreeView I would lik

Answer 1

Use a ContentControl

<ContentControl Content="{Binding ElementName=treeView1, Path=SelectedItem}">
    <ContentControl.Resources>
        <DataTemplate DataType="{x:Type local:ViewModelA}">
            <local:ViewA />
        </DataTemplate>
        <DataTemplate DataType="{x:Type local:ViewModelB}">
            <local:ViewB />
        </DataTemplate>
    </ContentControl.Resources>
</ContentControl>