How to: Add an object with predefined property values using the Collection Editor

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I am trying to use this example but the ItemInitializer class needs to be in a ViewModel and the dxprg:CollectionDefinition is part of a DataTemplate in a separate file. I can't use NewItemInitializer as suggested in this sample.

Tried:
NewItemInitializer="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=UserControl}, Path=DataContext.ItemInitializer}"

Received error:
System.Windows.Data Error: 40 : BindingExpression path error: 'ItemInitializer' property not found on 'object' ''WorkstationsEditorViewModel' (HashCode=43595579)'. BindingExpression:Path=DataContext.ItemInitializer; DataItem='WorkstationsEditorView' (Name='workstationsEditorView'); target element is 'CollectionDefinition' (Name=''); target property is 'NewItemInitializer' (type 'IInstanceInitializer')

So it’s looking for a property on WorkstationsEditorViewModel

So I did this on the ViewModel:

public ItemInitializer ItemInitializer {
           get { return new ItemInitializer();}

Now not throwing errors, but I'm not getting the Collection property showing in the Property Grid

Hello,

To process your recent post more efficiently, I created a separate ticket on your behalf: T169706: Example E4855 - Moving ItemInitialized to the View Model raises a binding exception. This ticket is currently in our processing queue. Our team will address it as soon as we have any updates.

Thanks,
Andrey