EF6 core – load grandchildren in query – the key is ThenLoad

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Working with entity: Tournament

Which has children: TRound with Course as entity that needs to be loaded based on Id ( as each golf round is played on a Course 🙂 )

ctx.Tournaments.Include(c => c.Trounds).ThenInclude(c => c.Course)

Took me a while to figure out why ctx.Tournaments.Include(c => c.Trounds.Select(c => c.Course)) stopped working, but it is a (good) core thingy.

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