xcad | developing CAD applications for SOLIDWORKS , including add | Development Tools library

https://stackoverflow.com/a/35417749/14891562

Alright, struggling to find shorter solution from the entire web. In the end, this is what I found, which help me to change the style of the DropDownButton. Thanks to the author!

To enlarge the button, I follow the instruction of the link above to create a resource dictionary for the entire DocumentPaneControlStyle. From there I change the "Width" and "Height" of the xcad:DropDownButton/

Conclusion, AvalonDock is tough! :'(

The code you’ve posted doesn’t work because there are several errors, but none that would cause the error message you’re observing.

Here’s the code with those errors fixed. This should work (though it doesn’t work with the data you provided, since that is truncated):

To control the layout dynamically, you have to implement ILayoutUpdateStrategy and assign it to DockingManager.LayoutUpdateStrategy. This strategy is invoked when ever you add an item to either DockingManager.DocumentsSource or DockingManager.AnchorablesSource. You can handle layout details before or after the adding of the content.

Note that an individual DataTemplate for each document model is still required (see examples). ILayoutUpdateStrategy only handles layout, but not content rendering.

You have to add all documents of different type to a common source collection.
I recommend to introduce an interface e.g., IDocument which is required to be implemented by each document type. This allows to store them in a common collection of type IDocument and enables polymorphism when iterating the collection.
You can then bind a ObservableCollection to the DockingManager.DocumentsSource.

The following example also creates the required layout (due to the grouping constraint). Because it will add mising layout elements to the LayoutPanel of DockingManager.Layout, the layout is handled before the content is added. Therefore in case of the grouped documents, there is no need to predefine the LayoutRoot:

LayoutUpdateStrategy.cs

You need to add a DataTemplateSelector to your code, in order to teach AvalonDock which DataTemplate used for your own View/ViewModel.

In order to do so, you need to define a new class like the following: