What's Automapper for?

Question

What’s Automapper for?

How will it help me with my domain and controller layers (asp.net mvc)?

Answer 1

If you have an object of one type and you want to populate the properties of an object of another type using properties from the first type, you have two choices:

1. Manually write code to do such a mapping.
2. Use a tool that will automatically handle this for you.

AutoMapper is an example of 2.

The most common use is to flatten models into a data transfer objects (or, in general, mapping across layer boundaries). What's very nice about AutoMapper is that for common scenarios you don't have to do any configuring (convention over configuration).