Use DataTrigger
to switch ContentTemplate
:
<DataTemplate DataType="{x:Type vm:AwesomeViewModel}">
<ContentControl Content="{Binding}">
<ContentControl.Style>
<Style TargetType="ContentControl">
<Setter Property="ContentTemplate"
Value="{StaticResource DetailedTemplate}"/>
<Style.Triggers>
<DataTrigger Binding="{Binding DisplaySummary}" Value="True">
<Setter Property="ContentTemplate"
Value="{StaticResource SummaryTemplate}"/>
</DataTrigger>
</Style.Triggers>
</Style>
</ContentControl.Style>
</ContentControl>
</DataTemplate>