The Entity Framework does not support the
Expression.Invoke operator. You receive the following exception when trying to use it:
"The LINQ expression node type 'Invoke' is not supported in LINQ to Entities.
Has anyone got a workaround for this missing functionality? I would like to use the PredicateBuilder detailed here in an Entity Framework context.
Edit 1 @marxidad - I like your suggestion, however it does baffle me somewhat. Can you give some further advice on your proposed solution?
Edit 2 @marxidad - Thanks for the clarification.
The Entity framework converts LINQ expressions into Entity Command trees and within that only its canonical functions are supported. You'd have to use the command trees with canonical functions to do something like PredicateBuilder.