How to create map for enum in iqueryable mapping in auto mapper?

Question

class Program
    {
        static void Main(string[] args)
        {
            var emp1 = new Soure.Employee();
            emp1.TestEnum = Soure.MyEnum1.red;
            var emp2 = new Soure.Employee();
            emp2.TestEnum = Soure.MyEnum1.yellow;
            var empList = new List<Soure.Employee>() { emp1, emp2 }.AsQueryable();
            var mapExpr = Mapper.CreateMap<Soure.Employee, destination.Employee>();
            Mapper.CreateMap<Soure.Department, destination.Department>();
            Mapper.CreateMap<Soure.MyEnum1, destination.MyEnum2>();
            Mapper.AssertConfigurationIsValid();
            var mappedEmp = empList.Project().To<destination.Employee>();

        }  
    }

I am mapping Source.Employee to Destination.Employee. All Properties can be mapped. But on enum mapping it gives me exception unable to map TestEnum to Int32 If i use override

var mapExpr = Mapper.CreateMap<Soure.Employee, destination.Employee>()
        .ForMember(x => x.TestEnum, opt => opt.MapFrom(s => (destination.MyEnum2)s.TestEnum));

Then it works.

Mapping classes are as bellow

namespace Soure
{
    public class Employee
    {
        public int Id { get; set; }
        public string Name { get; set; }

        public Department dept { get; set; }

        public int age { get; set; }

        public MyEnum1 TestEnum { get; set; }

        public Employee()
        {
            this.Id = 1;
            this.Name = "Test Employee  Name";
            this.age = 10;
            this.dept = new Department();
        }
    }

    public class Department
    {
        public int Id { get; set; }
        public string DeptName { get; set; }

        Employee emp { get; set; }

        public Department()
        {
            Id = 2;
            DeptName = "Test Dept";
        }
    }

    public enum MyEnum1
    {
        red,
        yellow
    }
}

namespace destination
{
    public class Employee
    {
        public int Id { get; set; }
        public string Name { get; set; }

        public int age { get; set; }
        public MyEnum2 TestEnum { get; set; }

        public Department dept { get; set; }

    }

    public class Department
    {
        public int Id { get; set; }
        public string DeptName { get; set; }

        Employee emp { get; set; }
    }
    public enum MyEnum2
    {
        red,
        yellow
    }
}

Check this link : http://stackoverflow.com/questions/9721466/automapper-cannot-convert-enum-to-nullable-int — Mez, Jan 08 '15 at 14:56
Why we need to specify more information in ForMember as If i am having different class and i create map between them it directly map it. — Hemant Malpote, Jan 08 '15 at 15:21

score 1 · Answer 1 · edited May 23 '17 at 12:23

1

The following are 2 ways of mapping enumerators using AutoMapper...

.ForMember(x => x.TestEnum, opt => opt.MapFrom(s => (int)s.TestEnum));

Another approach would be to use the ConstructUsing

mapper.CreateMap<TestEnum, Soure.MyEnum1>().ConstructUsing(dto => Enumeration.FromValue<Soure.MyEnum1>((int)dto.MyEnum2));

edited May 23 '17 at 12:23

Community

1
1

answered Jan 08 '15 at 14:57

Mez

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he already told that, He don't want to use override i.e ForMember – Hemant Malpote Jan 08 '15 at 14:59
Why we need to specify more information in ForMember as If i am having different class and i create map between them it directly map it. – Hemant Malpote Jan 08 '15 at 15:22
You'd need to create a definition for those types since they are not the same. – Mez Jan 08 '15 at 15:25
As you can see the content of both enum are same. – Hemant Malpote Jan 08 '15 at 15:27
if you see Mapper.CreateMap(); this two are also different classes. But here it won't ask for ForMember. – Hemant Malpote Jan 09 '15 at 05:56

How to create map for enum in iqueryable mapping in auto mapper?

1 Answers1