using System;

using AutoMapper;

​

​

public class Person

{

    public string FirstName { get; set; }

    public string LastName { get; set; }

    public int Age { get; set; }

    public string Address { get; set; }

    public string Email { get; set; }

}

​

public class PersonVM

{

    public string Name { get; set; }

    public int Age { get; set; }

    public string Address { get; set; }

    public string Email { get; set; }

}

​

​

​

​

public class Program

{

    public static void Main()       

    {

        Mapper.CreateMap<Person, PersonVM>().ForMember(dest=>dest.Name, opt => opt

                                                        .ResolveUsing<NameResolver>().ConstructedBy(() => new NameResolver())   );

        var person = new Person { FirstName="Amal" , LastName = "Dev", Age=10, Email = "test@test.com", Address="Test Address" };

        var personVM =  Mapper.Map<PersonVM>(person);

        Console.WriteLine("\nperson.FirstName : {0} \nperson.LastName : {1} \nperson.Age : {2} \nperson.Address : {3} \nperson.Email : {4}", person.FirstName, person.LastName, person.Age, person.Email, person.Address);

        Console.WriteLine("\npersonVM.Name : {0} \npersonVM.Age : {1} \nperson.Address : {2} \nperson.Email : {3}", personVM.Name, personVM.Age, personVM.Email, personVM.Address);

    }

}

public class NameResolver : ValueResolver<Person,string>

{

​

    protected override String ResolveCore(Person source)

    {

        // do something

        return String.Concat(source.FirstName ," ",source.LastName); 

    }

}