CODEWITHSUNDEEP
automapperprivatesetter
leozilla
leozilla

Reputation: 1356

AutoMapper mapping properties with private setters

Is it possible to assign properties with private setters using AutoMapper?

Upvotes: 33

Views: 28403

Answers (3)

Rafał Straszewski
Rafał Straszewski

Reputation: 1008

AutoMapper allows now (I am not sure, since when) to map properties with private setters. It is using reflection for creating objects.

Example classes:

public class Person
{
    public string Name { get; set; }
    public string Surname { get; set; }
}


public class PersonDto
{
    public string Fullname { get; private set; }
}

And mapping:

AutoMapper.Mapper.CreateMap<Person, PersonDto>()
    .ForMember(dest => dest.Fullname, conf => conf.MapFrom(src => src.Name + " " + src.Surname));

var p = new Person()
{
    Name = "John",
    Surname = "Doe"
};

var pDto = AutoMapper.Mapper.Map<PersonDto>(p);

AutoMapper will map property with private setter with no problem. If you want to force encapsulation, you need to use IgnoreAllPropertiesWithAnInaccessibleSetter. With this option, all private properties (and other inaccessible) will be ignored.

AutoMapper.Mapper.CreateMap<Person, PersonDto>()
    .ForMember(dest => dest.Fullname, conf => conf.MapFrom(src => src.Name + " " + src.Surname))
    .IgnoreAllPropertiesWithAnInaccessibleSetter();

The problem will emerge, if you will use Silverlight. According to MSDN: https://msdn.microsoft.com/en-us/library/stfy7tfc(v=VS.95).aspx

In Silverlight, you cannot use reflection to access private types and members.

Upvotes: 39

Chris Xue
Chris Xue

Reputation: 2537

See #600 Private/internal destination properties.

Solution:

public class PrivateInternalProfile {
    protected override Configure() {
        ShouldMapField = fieldInfo => true;
        ShouldMapProperty = propertyInfo => true;
        CreateMap<User, UserDto>(); //etc
    }
}

Upvotes: 7

boca
boca

Reputation: 2352

If you set the value for this properties in the constructor like this

public class RestrictedName
{
    public RestrictedName(string name)
    {
        Name = name;
    }

    public string Name { get; private set; }
}

public class OpenName
{
    public string Name { get; set; }
}

then you can use ConstructUsing like this

Mapper.CreateMap<OpenName, RestrictedName>()
            .ConstructUsing(s => new RestrictedName(s.Name));

which works with this code

var openName = new OpenName {Name = "a"};
var restrictedName = Mapper.Map<OpenName, RestrictedName>(openName);
Assert.AreEqual(openName.Name, restrictedName.Name);

Upvotes: 31

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