CODEWITHSUNDEEP
c#.netautomapper
Jag
Jag

Reputation: 169

Custom value for Condition in Automapper

I have a scenario like

If total number of days is less than 30 days, then I have to set Salary to null

this.CreateMap<Foo, Doo>()
    .ForMember(dst => dst.Salary, opt => {
                              opt.Condition(src => src.JoinedDate.Days <= 30));
                              opt.MapFrom(null)
}

But I am facing error "cannot find member of type Foo. Parameter name: name". but don't have any property "name".

Question is How to pass null value to destination property in condition check, and retain existing value if days greater than 30.

opt.MapFrom(null)

Upvotes: 1

Views: 374

Answers (3)

Jag
Jag

Reputation: 169

I just combined above two solutions and found answer for my question.

ForMember(dst => dst.Salary,
            opt => opt.ResolveUsing((src, dst) => src.JoinedDate.Days <= 30 ? null: dst.Salary));

Upvotes: 1

Guru Stron
Guru Stron

Reputation: 143033

Try using:

this.CreateMap<Foo, Doo>()
    .ForMember(dst => dst.Salary, 
        opt => opt.MapFrom(src => src.JoinedDate.Days <= 30 ? null : src.Salary))

UPD

To preserve Salary from destination use overload of MapFrom accepting both source and destination:

this.CreateMap<Foo, Doo>()
    .ForMember(dst => dst.Salary, 
        opt => opt.MapFrom((src, dst) => src.JoinedDate.Days <= 30 ? null : dst.Salary))

Upvotes: 2

Navoneel Talukdar
Navoneel Talukdar

Reputation: 4598

You can use automapper inline ResolveUsing.

ForMember(dst => dst.Salary,
            o => o.ResolveUsing(src => src.JoinedDate.Days > 30 ? src.Salary: null));

Upvotes: 1

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