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(); var tmp = Mapper.Map, List>(t); — daryal, Apr 25 '12 at 14:55
var t is IQueriable of anonymous class and cannot use with this form (db.test) — user1356462, Apr 25 '12 at 15:06

score 1 · Answer 1 · answered Apr 25 '12 at 15:00

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 '12 at 15:00

bhiku

128
9

daft question probably, but does calling t.ToList() return the expected number of items? – bhiku Apr 25 '12 at 15:22
see gist https://gist.github.com/2491229. It doesn't use Automapper but uses LINQ to achieve the same result. Hope this helps – bhiku Apr 25 '12 at 16:49
It's good but AutoMapper allows create calculated field and custom casting and... – user1356462 Apr 25 '12 at 18:21
Automapper has an open issue - https://github.com/AutoMapper/AutoMapper/issues/148 related to dynamic mapping for collection and arrays. I have updated the gist - https://gist.github.com/2491229 with an alternate use of AutoMapper dynamic mapping. Hope you find it useful – bhiku Apr 25 '12 at 22:03

score 0 · Answer 2 · edited May 23 '17 at 10:34

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 '17 at 10:34

Community

1
1

answered Apr 25 '12 at 15:36

Turbot

5,095
1
22
30

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؟ – user1356462 Apr 25 '12 at 15:54
@user1356462 : have you found out other the solution ? – Turbot Apr 27 '12 at 12:48

Mapping use Automapper

2 Answers2