实体框架WebAPI：代码首先正确返回json，数据库首先仅返回第一个对象和其他对象的引用

Question

i am moving a Code first EF project to a DB first project, cause we need to add our project to an existing DB and use some of the existing tables.

when i run the CodeFirst project it returns the correct JSON:

, but when i do the same on the DB first project it only returns the first object, and returns $refs for all the other objects.

Answer 1

You will need to make use of DTO's to transfer your data from your web api to the client application.

Those references are proxies for entity framework, to lazyload these but they don't get serialized in json.