Automapper : Mapping to an Interface - interface

Question

I am using AutoMapper to map between an entity and an Interface
First I created my mapping and checked it is valid.
AutoMapper.Mapper.CreateMap<User, IUserViewModel>();
AutoMapper.Mapper.AssertConfigurationIsValid();
Then I created a method that uses this mapping:
public IUserViewModel GetUser(int id)
{
var user= _userRepository.GetByKey(id);
var currentUser = Mapper.Map<User, IUserViewModel>(user);
return currentUser;
}
I am using this method in another place of my code
IUserViewModel myUser = XXXXX.GetUser(3);
This issue is this is myUser is always null.
However, when I debug my method and stop inside it juste before returning , I can see that my object currentSupplier is created and filled up correctly.
But when the method returns I get a null value.
I guess this has to do with the fact my object currentSupplier is created as
Proxy<....>
Any help?
Thank you.

Answer 1

Adding a full copy of my code that proves that the above works for me - couldnt fit it into the comments.
class Program
{
static void Main(string[] args)
{
Program program = new Program();
IUserViewModel myUser = program.GetUser(3);
Console.WriteLine(myUser.Name); // Prints Frank
Console.Read();
}
public Program()
{
Mapper.CreateMap<User, IUserViewModel>();
Mapper.AssertConfigurationIsValid();
}
private UserRepo _userRepository = new UserRepo();
public IUserViewModel GetUser(int id)
{
var user = _userRepository.GetByKey(id);
var currentUser = Mapper.Map<User, IUserViewModel>(user);
return currentUser;
}
}
public class UserRepo
{
public User GetByKey(int id)
{
return new User { Name = "Frank" };
}
}
public interface IUserViewModel
{
string Name { get; set; }
}
public class User
{
public string Name { get; set; }
}
Could you add some additional content to show where this is failing?