使用Entity Framework是否可以创建未映射到数据库表的实体？

Question

实体框架：是否可以创建未映射到数据库表的实体？

Answer 1

In such case it is not an entity but just a class = create normal class file and you are done. That class cannot be part of your entity model (EDMX) or code first mapping because it is not related to persistence (and EF).

Answer 2

您可以使用[NotMapped]属性，并且仍在DbContext中对其进行跟踪。

Answer 3

You can create a Class in the EF or create a class in seperate class ClassName.cs and use it as your model.

Better to Use the Second option, since i will be more clear and if EF grows large, it will be hard to find your class from there and modify.

Answer 4

您可以使用“复杂类型”。

Answer 5

The Entity Framework is really about auto-generating classes that have all the guts to be easily used in Web Services and connected to Databases. If you don't need those capabilities of EF, then all you are really doing is using a UI to make your Entity Classes, rather than just coding them out by hand. It's certainly possible, but you don't gain much by doing so and end up with a lot of auto-generated bloat in your code base.

Indeed, since EF does it "a certain way" you lose some flexibility that is otherwise available to you by defining your own Entity Classes in source.