AutoMapper: Mapping Com Object: Missing type map configuration or unsupported mapping.

I try to map a Interop Com Object to a .Net Object and getting a exception:

Missing type map configuration or unsupported mapping.

Mapping types:
ProjectTimeRecord -> TimeRecord
ComTimeRecording.ProjectTimeRecord -> AutoMapperTest.TimeRecord

Destination path:
TimeRecord

Source value:
System.__ComObject

The Interop library is a private dll, I cloud not share. I write minimal code to reproduce:

    class TimeRecord
    {
        public int Id { get; set; }
    }

    class Program
    {
        static void Main(string[] args)
        {
            ProjectTimeRecord projectTimeRecord = GetRecord();

            Console.WriteLine(projectTimeRecord.GetType());
            // Output: "System.__ComObjects"

            Mapper.CreateMap<ProjectTimeRecord, TimeRecord>();

            // Exception in next line
            TimeRecord record = Mapper.Map<ProjectTimeRecord, TimeRecord>(projectTimeRecord);
            Console.WriteLine(record.Id);
        }
    }

I use VS2015 RC, .NET 4.6 RC and AutoMapper 4.0.0-ci1061. On StackOverflow is a question with the same exception

About this issue

Original URL
State: closed
Created 9 years ago
Comments: 17 (10 by maintainers)

Most upvoted comments

Here’s an implementation for AutoMapper 6: https://gist.github.com/kbkk/437d92af4f3fc72ee9040f633d0ce988

AutoMapper.Mapper.Initialize(cfg =>
{
    cfg.Mappers.Add(new ComObjectMapper());
});

kbkk on Jul 16, 2017

This will output ApplicationClass, not __ComObject. And the mapping will work.

        var _x = (Microsoft.Office.Interop.Excel._Application) new Microsoft.Office.Interop.Excel.ApplicationClass();
        Console.WriteLine(_x);
        var _result = _mapper.Map<App>(_x);

lbargaoanu on Jun 9, 2016