如何在不迭代的情况下将Linq结果转换为DTO类对象

I'm building a Web API project that will be made available to third-party's and also used by my own web application/s. The Web API methods will return JSON representations of complex types/objects. These are pre-defined classes which I can make available to third-party's so they understand how the data is structured and can deserialize the JSON. I'll refer to these classes as DTO classes until someone corrects me. I'm building a Web API project that will be mad