What is the difference between the approaches the addition/outcome of entities in EF

[Alberto]

There's a contempor from the presentation that accepts the object of Class Book. db in this case context. As far as I'm concerned, the record can be done in two ways.

First:

    public ActionResult Create(Book newBook)
    {
        db.Entry(newBook).State = EntityState.Added;
        db.SaveChanges();
    }

And the other:

public ActionResult Create(Book newBook)
    {
        db.Books.Add(newBook);
        db.SaveChanges();
    }

Please tell me what the different approaches are and which one is preferable to use?

[Jolied]

Specifically, there is no difference. It's preferable to use the one you understand personally.

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But in general, surgery. db.Books.Add(newBook); and db.Entry(newBook).State = EntityState.Added; They can behave differently.

Method db.Books.Add(newBook); He'll check that newBook not yet added in the context db♪ If you download the book from the base, then add it back, there's a mistake.

At the same time, db.Entry(newBook).State = EntityState.Added; Nothing checks out. If you download the book from the base, then add it back, it'll be a copy of the database.

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I don't see you having a db variable. I hope she's not static? The statistical context of EF is a serious mistake.