Question

Is there a way in Entity Framework 4.0 to bypass the object cache for a single LINQ query?

I want to be able to execute a query and know that I’m getting the absolute latest from the database even if that object has been retrieved earlier in the request and has been stored in cache.

Answer 1

You must configure your query or object set to force materialization of result set instead of using already materialized entities from identity map.

context.YourObjectSet.MergeOption = MergeOption.OverwriteChanges;
// now execute the query as many times as you want

or

var query = ...;
((ObjectQuery<YourEntity>)query).MergeOption = MergeOption.OverwriteChanges;