CODEWITHSUNDEEP
c#automapper
griegs
griegs

Reputation: 22770

Automapper pass ForMember(s) as argument

Is there a way I can do something like this?

public void CreateMap<T, I>(??? ForMember)
{
  Mapper.CreateMap<T, I>().ForMember(ForMember);
}

I'm just trying to pass the ForMember as an argument a method that I can then attach to the Map.

Upvotes: 1

Views: 927

Answers (1)

samy
samy

Reputation: 14972

Here is a possible way to do it: given two classes

internal class ExampleClass
{
    public string Name { get; set; }
}

internal class OtherExampleClass
{
    public string OtherName { get; set; }
}

Define the following function 

 private static void CreateMap<From, To>
                              (Expression<Func<From, object>> FromExpression,
                              Expression<Func<To, object>> ToExpression)
 {
     Mapper.CreateMap<From, To>()
     .ForMember(ToExpression, opt => opt.MapFrom(FromExpression));
 }

And call it by passing the lambdas directly:

CreateMap<ExampleClass, OtherExampleClass>(fromClass => fromClass.Name, toClass => toClass.OtherName);

The IMappingExpression (the type returned from the ForMember method) is not something that you should use. It holds configuration and chaining methods but i don't think it is supposed to come from the outside. With a brief survey of the code i couldn't find any point at which you could add IMappingExpression so using the two lambdas will be your best bet imo

Upvotes: 2

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