How to convert ObjectSet to DbSet

Question

I’m trying to create class from abstract one:

public class ManufacturerEntityService : BaseEntityService<Manufacturer>
{
    Entities entities = new Entities();

    protected override ObjectSet<Manufacturer> EntitySet
    {
        get { return entities.Manufacturers; }
    }

}

Error occurred:

Cannot implicitly convert type 'System.Data.Entity.DbSet<_21century.Models.Manufacturer>' to 'System.Data.Objects.ObjectSet<_21century.Models.Manufacturer>'

In BaseEntityService i’ve used ObjectSet, cause DbSet doesn’t have SaveData method. The question is how to convert ObjectSet to DbSet? Is it possible or not? Any walkarounds? I have to pass DbContext obj there?

I’m newbie in creating mvc projects. Searching didn’t give any result. Hope someone can help me.

Why are you using SaveData in your DbSet? That should be done on the DbContext. — Scottie, Mar 25 '15 at 21:24
`ObjectSet.SaveData` doesn't exist. Is this some homebrewn extension method? But anyway, I'd always try to turn away from the legacy `ObjectSet` and replace it for the more developer-friendly `DbSet`. I don't know how much impact this would have on your code, but I'm sure it's worth the effort. — Gert Arnold, Mar 25 '15 at 21:39

score 0 · Answer 1 · edited May 23 '17 at 11:56

0

The answer can be found here: How to convert DbSet in Entity framework to ObjectQuery

public class ManufacturerEntityService : BaseEntityService<Manufacturer>
{
    Entities entities = new Entities();

    protected override ObjectSet<Manufacturer> EntitySet
    {
        get 
        { 
            ObjectContext objectContext = entities.ObjectContext;  
            return objectContext.CreateObjectSet<Manufacturer>("Manufacturers");
        }
    }

}

edited May 23 '17 at 11:56

Community

1
1

answered Mar 25 '15 at 21:27

Keith Payne

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Better to mark as duplicate than to copy an answer, esp. when you don't copy it correctly (`entities.ObjectContext`). But while this answers the OP's direct question, it's probably not the best way to go. – Gert Arnold Mar 25 '15 at 21:34

How to convert ObjectSet to DbSet

1 Answers1