CODEWITHSUNDEEP
c#asp.net-mvcentity-frameworkasp.net-web-api
kaysush
kaysush

Reputation: 4836

Delete an Entity with Entity Framework 6.0

I am trying to delete an entity using EF6.0 but I'm stuck in a situation and getting exception. Below is the code snippet where I'm running into exception

_context.Images.Remove(image)

I have a separate logic that gives me this entity. I'm getting below exception:

The object cannot be deleted because it was not found in the ObjectStateManager.

Upon googling I found out that since entity is fetched with separate context and getting deleted in separate context i'm getting this error. I don't want to fetch the entity again. I want to use the fetched entity itself but can't find a way to do so.

Upvotes: 1

Views: 361

Answers (1)

krillgar
krillgar

Reputation: 12805

What you need to do is Attach() the entity to the context. This will then give your DbContext knowledge of the object. As long as your entity has a valid ID, you'll be fine.

Here is some pseudo-code to give you an idea of what you'll need to do.

using (var context = new MyDbContext())
{
    // Make your context aware of the object.
    context.Images.Attach(image);

    // Now delete the object. It will change the internal
    // state so that it will be deleted.
    context.Images.Remove(image);

    // Finally, save your changes
    context.SaveChanges();
}

Upvotes: 2

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