Automapping a collection fails

Thami Najim

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Jan 20, 2022, 5:45:45 AM1/20/22

to AutoMapper-users

Hi there

I am hoping for some help with this bug.

I have a class that inherits from a List<T>. When setting the mapper-configuration I get an error:

System.ArgumentException: 'Incorrect number of arguments supplied for call to method 'AutoMapperPr.DestinationModel get_Item(Int32)' (Parameter 'property')'

Steps to reproduce:

Console application .Net 6 with AutoMapper v.11.0.0

Create these classes:

1. SourceModel

2. SourceModelCollection : List<SourceModel>

3. DestinationModel

4. DestionationModelCollection : List<DestionationModel>

Setup the automapper configuration:

var createMap = new MapperConfiguration
(
_config =>
{
_config.CreateMap<SourceModel, DestinationModel>().ReverseMap();
_config.CreateMap<SourceModelCollection, DestinationModelCollection>().ReverseMap();
}
);

Dennis Grass

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Dec 1, 2022, 10:05:00 AM12/1/22

to AutoMapper-users

Hi @Thami,

have the same problem ... :/
Did you found a solution?

Best regards

Dennis

Maikol Martinez

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Jan 23, 2023, 10:37:39 AM1/23/23

to AutoMapper-users

Hello, do you have the answer? I have the same problem? :(

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