CODEWITHSUNDEEP
c#automapper
sudipBanerjee
sudipBanerjee

Reputation: 47

AutoMapper Nested Mapping not working. Here is the config and code :

Followed the steps mentioned in Automapper wiki to configure nested mapping with complex objects. but not working : 

public class Student
    {
        public int ID{get;set;}
        public string Name { get; set; }
        public string Standard { get; set; }
        public List<string> Course { get; set; }
        public int Age { get; set; }
        public string FatherName { get; set; }
        public string  MotherName{ get; set; }
        public char Gender { get; set; }
        public DateTime DOB { get; set; }
        public string BloodGroup { get; set; }
        public int TestCondition { get; set; }
        public Address Address { get; set; }

    }

  public class Address
    {
        public int ID { get; set; }
        public string Line1 { get; set; }
        public string Line2 { get; set; }
        public string Zip { get; set; }
    }

DTO : 

public class StudentDTO
    {
        public string Name { get; set; }
        public string Standard { get; set; }
        public char Gender { get; set; }
        public DateTime DOB { get; set; }
        public string BG { get; set; }
        public int TestCondition { get; set; }
        public AddressDTO AddressDTO { get; set; }

    }
 public class AddressDTO
    {
        public int ID { get; set; }
        public string Line1 { get; set; }
        public string Line2 { get; set; }
        public string Zip { get; set; }
    }

Configuration :

public class AutoMapperProfileConfig : Profile
    {

        public AutoMapperProfileConfig()
        {

            CreateMap<Student, StudentDTO>().ForMember(dest => dest.DOB, opt=>opt.Ignore())
                                            .ForMember(x=>x.BG,opt=>opt.MapFrom(y=>y.BloodGroup))/*.AfterMap((src, dest) => dest.Name = "After MAP")*/
                                            .ForMember(x=>x.TestCondition, opt=>opt.Condition(src => (src.TestCondition >= 100))
                                            );
CreateMap<Address, AddressDTO>();

Execution : 

Student student = new Student();
            Address add = new Address();
            add.Line1 = "abcd";
            student.Address = add;
            var studentLite = Mapper.Map<StudentDTO>(student);

Although studentDTO is getting mapped properly the AddressDTO is null.

Upvotes: 0

Views: 1911

Answers (1)

Dirk Trilsbeek
Dirk Trilsbeek

Reputation: 6023

You're mapping Student.Address to StudentDTO.AddressDTO. As the name of your target property has changed, AutoMapper doesn't know what to do with it. If you changed your propertyname in StudentDTO from AddressDTO into Address, Automapper should be able pick it up and map it.

An alternative solution would of course be to instruct AutoMapper explicitly to map Student.Address to StudentDTO.AddressDTO.

Upvotes: 3

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