Hello Joe Lozina,
You can do something like this:
foreach (var item in actualGrid.ChildTableDefinitions)
printGrid.HierarchyChildTemplate = actualGrid.HierarchyChildTemplate;
However, you might want to define a separate hierarchy child template that is more print-friendly, with collapsed row indicators, group panel, etc. Assuming you've defined it in your UserControl's Resources with x:key="printHierarchyChildTemplate" :
printGrid.HierarchyChildTemplate = (DataTemplate)this.Resources["printHierarchyChildTemplate"];
Please let me know if you need further assistance.
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