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Editorial Team
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Asked: 2026-06-06T18:34:37+00:00

I am using CodeFirst approach and struck with an issue where I need to

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I am using CodeFirst approach and struck with an issue where I need to convert DbSet to ObjectQuery.
This is what I did for conversion.

ObjectContext objectContext = ((IObjectContextAdapter)db).ObjectContext;
ObjectSet<Request> objectSet = objectContext.CreateObjectSet<Request>();

where db is the context inheriting from DbContext and Request is class.

So, when I try to call the method that expects ObjectQuery as ObjectQueryMethod(objectSet), it throws the following error.

“Type of conditional expression cannot be determined because there is no implicit conversion between ‘System.Data.Entity.DbSet<>’ and ‘System.Data.Objects.ObjectQuery<>'”

Any help is greatly appreciated!

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1 Answer

  1. Editorial Team

    I found the answer. Of course, it is possible to convert DbSet in Entity framework to ObjectQuery using the below lines of code.

    ObjectContext objectContext = ((IObjectContextAdapter)db).ObjectContext;  
ObjectSet<Request> objectSet = objectContext.CreateObjectSet<Request>("Requests");

    where,

    • db – Context class inherting from DbContext.
    • Requests – DbSet<Request> defined in Context class.
    • objectSet – Can now be passed as ObjectQuery.
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