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Mapping many-to-many groups in WPF

I'm not sure that I'm on the right track with this, but essentially I'm trying to display a grouped list of elements where each element can be a member of several groups. those. two objects are connected on a many-to-many basis. I will try to explain...

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My question is: how do I group elements like this into a control? I know ICollectionView and PropertyGroupDescription, but that doesn't seem to serve my purpose here (it seems to work only in a one-to-many scenario).

Any ideas?

Some notes:

  • When displayed in the list, I want to show all the components grouped by set.
  • When I select a component from this list, I only need that particular instance of the component (i.e. I want the component + collection from which I selected it).
  • Ignore the fact that I'm using TreeView to show the items below, since I really use ListBox with GroupStyle
  • I am using EF 4.3.1 with code and the MVVM WPF pattern.
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1 answer

Use the Include () method on the context object to include related objects.

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Source: https://habr.com/ru/post/917516/

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