Force EF 4.1 Code First to See an Attached entity as Modified

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执念已碎
执念已碎 2020-12-29 05:08

All the examples I\'ve found refer to a class called ObjectContext, which doesn\'t appear to exist in CTP5. I must stress at this point, CTP5 is my first exposure to the Ent

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  •  时光说笑
    2020-12-29 06:05

    When you Attach an entity, it goes to Unchanged state (it has not been changed since it attached to the context). All you need to is to explicitly change the Entity State to Modified:

    _context.Users.Attach(user);
    _context.Entry(user).State = System.Data.Entity.EntityState.Modified;
    _context.SaveChanges();
    

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