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Asked: 2026-05-10T21:42:08+00:00

Using LINQ to Entities sounds like a great way to query against a database

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Using LINQ to Entities sounds like a great way to query against a database and get actual CLR objects that I can modify, data bind against and so forth. But if I perform the same query a second time do I get back references to the same CLR objects or an entirely new set?

I do not want multiple queries to generate an ever growing number of copies of the same actual data. The problem here is that I could alter the contents of one entity and save it back to the database but another instance of the entity is still in existence elsewhere and holding the old data.

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  1. Within the same DataContext, my understanding is that you’ll always get the same objects – for queries which return full objects instead of projections.

    Different DataContexts will fetch different objects, however – so there’s a risk of seeing stale data there, yes.

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