Mapping use Automapper

Question

How to map List of anonymous to List of T using AutoMapper?

For example:

class Test{
  public string a1{get;set]}
  public string a2{get;set;}
}

//....Entity Framework 4.3.1
var t=from z in db select {z.a1,z.a2};

var tmp=AutoMapper.Mapper.DynamicMap<List<Test>>(t);

But tmp always is empty

How to fix it?

does it work without dynamicmapping? something like Mapper.CreateMap<db.test, Test>(); var tmp = Mapper.Map<IEnumerable<db.test>, List<Test>>(t); — daryal
– daryal, Commented Apr 25, 2012 at 14:55
var t is IQueriable of anonymous class and cannot use with this form (db.test) — user1356462
– user1356462, Commented Apr 25, 2012 at 15:06

bhiku · Accepted Answer · 2012-04-25 15:00:13Z

1

You will need to call t.ToList() to execute the query first

var tmp=AutoMapper.Mapper.DynamicMap<List<Test>>(t.ToList());

answered Apr 25, 2012 at 15:00

bhiku

1289 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

bhiku Over a year ago

daft question probably, but does calling t.ToList() return the expected number of items?

bhiku Over a year ago

see gist gist.github.com/2491229. It doesn't use Automapper but uses LINQ to achieve the same result. Hope this helps

user1356462 Over a year ago

It's good but AutoMapper allows create calculated field and custom casting and...

bhiku Over a year ago

Automapper has an open issue - github.com/AutoMapper/AutoMapper/issues/148 related to dynamic mapping for collection and arrays. I have updated the gist - gist.github.com/2491229 with an alternate use of AutoMapper dynamic mapping. Hope you find it useful

Community · Accepted Answer · 2017-05-23 10:34:49Z

0

how about you change

var t=from z in db select new Test
                          {
                             a1 = z.a1,
                             a2 = z.a2
                           }

EDIT to allow mapping to dynamic types , you can refer to existing post

edited May 23, 2017 at 10:34

CommunityBot

11 silver badge

answered Apr 25, 2012 at 15:36

Turbot

5,2511 gold badge24 silver badges31 bronze badges

2 Comments

user1356462 Over a year ago

Thanks. with this mode LINQ AutoMapper not needed but if LINQ query return extra fields than Test class, does't work. Is there any other Solution؟

Turbot Over a year ago

@user1356462 : have you found out other the solution ?

Collectives™ on Stack Overflow

Mapping use Automapper

2 Answers 2

4 Comments

2 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

4 Comments

2 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related