Dynamic template selection

Question

I am using Prism, and loading UI components from modules. I have the view models appearing correctly using the DockingAdapter, but I need to apply DataTemplates based upon the type of view model. I cannot hard code them in Xaml in the application's resources, so I need a DataTemplateSelector to select the proper template for the view model.

How can I use a DataTemplateSelector for the content in the DockingManager?

Durga Rajan · Answer

Hi Russ,Sorry for delay in getting back to you.We understand that you wanted to have Template support in
DockingAdapter. Here, we have attached a MVVM DockingAdapter sample which uses
the new TemplateSelector property in DockingAdapter to provide DataTemplate for
each item. Code snippets :

public DataTemplateSelector
  ItemTemplateSelector
  {
      get { return (DataTemplateSelector)GetValue(ItemTemplateSelectorProperty);
  }
      set {
  SetValue(ItemTemplateSelectorProperty, value); }
  }
   
  // Using a DependencyProperty as the backing store for
  ItemTemplateSelector.  This enables
  animation, styling, binding, etc...
  public static readonly DependencyProperty
  ItemTemplateSelectorProperty =
     
  DependencyProperty.Register("ItemTemplateSelector", typeof(DataTemplateSelector), typeof(DockingAdapter), new PropertyMetadata(null));

<mvvm:DockingAdapter
      Grid.Row="1"
      ActiveDocument="{Binding ActiveDocument, Mode=TwoWay}"
      ItemTemplateSelector="{StaticResource AdapterDataTemplateSelector}"
      ItemsSource="{Binding Workspaces}" />

public class AdapterDataTemplateSelector
  : DataTemplateSelector
  {
      public override DataTemplate
  SelectTemplate(object item, DependencyObject container)
      {
          // create dynamic datatemplate here
   
          if (item is Document) return (DataTemplate)
  Application.Current.Resources["DocumentView"];
          if (item is DocumentsViewModel) return
  (DataTemplate)Application.Current.Resources["DocumentsView"];
          if (item is PropertiesViewModel) return
  (DataTemplate)Application.Current.Resources["PropertiesView"];
          return base.SelectTemplate(item,
  container);
      }
  }

Resources
     are defined in App.xaml.
This can be easily added to your PRISM sample. Please let us
know if this addresses your needs or if we have misunderstood anything.Regards,DurgaAttachment: DockingDemo_7a8a7442.zip