Re: Sample/Documentation for IMappingOperationOptions ?

[Patrick Steele]

I don't know if the automapper wiki
(https://github.com/AutoMapper/AutoMapper/wiki) is up-to-date, but
there's a few options like:

Specifically defining which source field will be used in destination mapping:
.ForMember(d => d.Foo, o => o.MapFrom(s => s.FooSource))

Ignoring a property:
.ForMember(d => d.SecurityLevel, o => o.Ignore())

Defining a substitute value when the source property is null:
.ForMamber(d => d.Age, o => o.NullSubstitute(18))

There's also options like:
.ResolveUsing (use an IOC container to create the destination object)
.UseValue to define a specific value for a field when mapping.

If there's something specific you're looking for, just ask! :)

---
Patrick Steele
http://weblogs.asp.net/psteele


On Tue, Jul 3, 2012 at 4:10 PM, Robert Gibbens <robgi...@gmail.com> wrote:
> I notice that Map() takes a IMappingOperationOptions and an
> Action<IMappingOperationOptions>. Is there ANY documentation or sample usage
> of this anywhere?
>
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[Jimmy Bogard]

That one is fairly new - added to support basically contextual mapping operations.

The idea is - create mapping extensions that need context. Things like custom value resolvers, formatters and type converters.

Next, you'll use the mapping options to pass in basically a callback to provide those instances at the time of mapping.

The thing to be used to provide those items is *most likely* a nested container. It's what we mostly use, especially in MVVM cases, where lots of places have contextual injection of instances/dependencies/values. See this blog post for more:

http://lostechies.com/jimmybogard/2011/09/29/automapper-2-0-nestedchild-containers/

Which I should put on the wiki, for sure.

Make sense?

[Rex Henderson]

It is now 2022 and there is still no really good examples or documentation exploring IMappingOperationOptions.

[Jimmy Bogard]

It’s 2022 and no one has paid me to write the docs. Sorry, this is a free project and we all only have so much time.

On Sep 5, 2022, at 7:10 AM, Rex Henderson <r...@addmembers.com> wrote:

It is now 2022 and there is still no really good examples or documentation exploring IMappingOperationOptions.

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