使用Entity Framework时实现业务逻辑(implementing business logic when using Entity Framework)

 我是Entity框架的新手，我对如何实现业务逻辑感到困惑。 
 
 我正在使用Code First方法并生成了我的POCO。 我将它们放在一个单独的项目中，这样它们就可以用在多个项目中。 
 
 我想知道如何实现对象的业务逻辑，当我尝试将项目保存到数据库时检查。 例如，如果我定义一个规则，除非输入名称，否则无法保存MyObject，我该怎么做？ 
 
 示例简单的POCO 
 
public class MyObject() {
    public String name { get; set; };

    public MyObject() {}
}
 
 显然我有很多对象，每个对象都有不同的业务规则。 
 
 我来自Csla（ http://www.lhotka.net/cslanet/ ）业务框架背景，您可以在其中定义一个具有Save方法的业务对象。 在调用Save时，框架运行ValidationRules，从而确定是否需要调用数据库。 
 
 我希望使用Entity Framework这样的东西。 代码示例很棒，或者对阅读材料的引用。 谢谢 

I am new to Entity framework and am getting confused about how to implement Business Logic.
 
I am using the Code First approach and have generated my POCOs. I have them in a separate project so they can be used in multiple projects. 
 
I would like to know how i can implement business logic for an object, that is checked when i try to save an item to the database. For example, if I define a rule that MyObject cannot be saved unless a name is entered, how can i do this?
 
Example simple POCO
 
public class MyObject() {
    public String name { get; set; };

    public MyObject() {}
}
 
Obviously i have many objects, and each object has different business rules.
 
I am coming from a Csla (http://www.lhotka.net/cslanet/) business framework background, where you define a business object, which has a Save method. upon calling Save, the framework runs the ValidationRules and thus determines whether a call to the database is needed. 
 
I would like something like this, using Entity Framework. Code example would be great, or references to reading material. Thanks

原文：https://stackoverflow.com/questions/25788757