I have a DataTemplate which contains a CheckBox and ListBox. When the CheckBox is checked, I want to change the ItemTemplate property on the ListBox to change the appearance of each item.

Right now, it looks like this:

<DataTemplate DataType={x:Type MyViewModel}>
   <DockPanel>       
      <CheckBox DockPanel.Dock="Bottom"
                Content="Show Details"
                HorizontalAlignment="Right"
                IsChecked="{Binding ShowDetails}" 
                Margin="0 5 10 5" />

      <ListBox ItemsSource="{Binding Items}"
               ItemTemplate="{StaticResource SimpleItemTemplate}"
               Margin="10 0 10 5">
         <ListBox.Triggers>
            <DataTrigger Binding="{Binding ShowDetails}" Value="True">
               <Setter Property="ItemTemplate"
                       Value="{StaticResource DetailedItemTemplate}" />
            </DataTrigger>
         </ListBox.Triggers>
      </ListBox>
   </DockPanel>
</DataTemplate>

However, when I try to compile, I get the following error messages:

Value 'ItemTemplate' cannot be assigned to property 'Property'. Invalid PropertyDescriptor value.

and

Cannot find the static member 'ItemTemplateProperty' on the type 'ContentPresenter'.

I'm still fairly new to WPF, so perhaps there is something I'm not quite understanding?