从具有相同属性的另一个对象创建对象

Question

I have an object in C# with lets say 20 properties and it's part of a datacontract. I also have another business entity with similar properties, which I want to populate from the response object. Is there any way to do this other than assigning each property of one object to the corresponding properties of the other?

Answer 1

是的，看看Automapper

Answer 2

MiscUtil has an answer to this ( PropertyCopy ) that uses Expression (.NET 3.5) and a static field to cache the compiled delegate (so there is negligible cost per invoke):

DestType clone = PropertyCopy<DestType>.CopyFrom(original);

If you are using 2.0, then probably reflection would be your friend. You can use HyperDescriptor to improve the performance if you need.

Answer 3

如果您希望以自动方式执行反射，则可以选择反射，前提是属性名称可以在对象之间轻松映射。

Answer 4

Automapper is worth a try, but in the end, I decided it wasn't for me. The big problem with those sorts of tools is you incur a great deal of runtime overhead each and every time a mapping occurs. I asked this same question last week and I ended up rolling my own solution (look at the accepted answer). You're free to modify the source I provided, I make no claims as to it's effectiveness, suitability, performance, you-break-it-you-get-to-keep-the-pieces, etc., but it works well enough for me to create design time object to object mapping.

Answer 5

C＃Object Clone Wars可能是一个很好的起点。