DbSet.Add(entity)和entity.State = EntityState.Added之间的区别 [英] Difference between DbSet.Add(entity) and entity.State = EntityState.Added

问题描述

可能重复:
IDbSet.Add和DbEntityEntry有什么区别.State = EntityState.Added?

DbSet.Add(entity)与

What's the difference between DbSet.Add(entity) vs entity.State = EntityState.Added? I some examples using both to add an entity to DbContext but not sure which is the preferred one.

我看到一些测试"已分离"的条件，并决定在其存储库实现中使用哪个条件.

I saw some test the "Detached" condition and decide which to use in their repository implementation.

    public void Add(T entity)
    {
        var entry = DbContext.Entry(entity);
        if (entry.State == EntityState.Detached)
        {
            DbSet.Add(entity);
        }
        else
        {
            entry.State = EntityState.Added;
        }
    }

有人知道吗?谢谢！

推荐答案

这两个选项之间没有任何区别，因为它们都在调用相同的方法(例如，ObjectContext上的AddObject).

There isn't any difference between either of these options as under the hood they are both calling the same method (ie AddObject on an ObjectContext).

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