it does not work as expected!

[automapper]

it does not work as expected!

[TylerCarlson1]

AutoMapper isn't meant to clone objects. If you did something like Blog to BlogDTO and Post to PostDTO it would work. If you are using the exact same types it doesn't map as expected, even without AutoMapper.Collection.

[askdong]

it's not about cloning. I want to update the exist object with another instance of the same type :)

[askdong]

I make sure that simple objects(no collection child propery) with same type can map as expected with AutoMapper, I expected that AutoMapper.Collection also can work, that will be awesome!

[TylerCarlson1]

If you remove .EqualityComparision((n, o) => n.PostId == o.PostId) and the test still fails, then there's nothing I can really do. Cause without that it will use AutoMapper's default collection logic, and if that doesn't work then mine won't work as well.

I think what happens if it's the same type, it will just use the destination value and not do the mapping, or something along these lines. AutoMapper doesn't support these kinds of scenarios in general.

[askdong]

Dear TylerCarlson,
It was my misunderstanding, the collection works as my expected!
sorry for this stupid question!