Ignore a property in AutoMapper?

Ignore a property in AutoMapper?

To ignore a property in AutoMapper, you can use the Ignore method or the ForMember method with the Ignore configuration option.

Here's an example:

public class Source { public int Id { get; set; } public string Name { get; set; } public string Description { get; set; } } public class Destination { public int Id { get; set; } public string Name { get; set; } } var config = new MapperConfiguration(cfg => { cfg.CreateMap<Source, Destination>() .ForMember(dest => dest.Name, opt => opt.Ignore()); }); var source = new Source { Id = 1, Name = "foo", Description = "bar" }; var mapper = config.CreateMapper(); var destination = mapper.Map<Destination>(source); Console.WriteLine("Id: {0}, Name: {1}", destination.Id, destination.Name);

In this example, we define two classes called Source and Destination, with Source having a Name and a Description property, and Destination having only a Name property.

We create a MapperConfiguration object and use the CreateMap method to create a mapping between Source and Destination.

We then use the ForMember method with the Ignore configuration option to ignore the Name property of Destination when mapping from Source.

We create a Source object with some sample data, and use the CreateMapper method of the MapperConfiguration object to create a Mapper object.

We then use the Map method of the Mapper object to map the Source object to a Destination object.

Finally, we output the Id and Name properties of the Destination object, which should only contain the Id property with the Name property ignored.

By using the Ignore method or the ForMember method with the Ignore configuration option, you can easily ignore a property in AutoMapper.

Examples

  1. "Automapper ignore property mapping"

    • Description: Learn how to instruct AutoMapper to ignore a specific property during mapping.
    CreateMap<Source, Destination>() .ForMember(dest => dest.PropertyToIgnore, opt => opt.Ignore());

  2. "Automapper conditional property mapping"

    • Description: Explore how to conditionally ignore a property during mapping using AutoMapper.
    CreateMap<Source, Destination>() .ForMember(dest => dest.PropertyToIgnore, opt => opt.Condition(src => src.PropertyCondition));

  3. "Automapper ignore all unmapped properties"

    • Description: Understand how to configure AutoMapper to ignore all properties that are not explicitly mapped.
    CreateMap<Source, Destination>().ForAllOtherMembers(opt => opt.Ignore());

  4. "Automapper ignore property based on destination member condition"

    • Description: Ignore a property based on a condition involving the destination member during mapping.
    CreateMap<Source, Destination>() .ForMember(dest => dest.PropertyToIgnore, opt => opt.MapFrom(src => src.PropertyCondition ? null : src.PropertyToIgnore));

  5. "Automapper ignore property based on source member condition"

    • Description: Ignore a property based on a condition involving the source member during mapping.
    CreateMap<Source, Destination>() .ForMember(dest => dest.PropertyToIgnore, opt => opt.MapFrom(src => src.PropertyCondition ? src.PropertyToIgnore : null));

  6. "Automapper ignore property by name convention"

    • Description: Learn how to use naming conventions to ignore properties during AutoMapper mapping.
    CreateMap<Source, Destination>() .ForAllOtherMembers(opt => opt.Condition((src, dest, srcMember, destMember) => destMember.Name != "PropertyToIgnore"));

  7. "Automapper ignore properties of specific type"

    • Description: Ignore all properties of a specific type during AutoMapper mapping.
    CreateMap<Source, Destination>() .ForAllOtherMembers(opt => opt.Condition((src, dest, srcMember, destMember) => !(srcMember.Type == typeof(TypeToIgnore))));

  8. "Automapper ignore properties in both directions"

    • Description: Ignore a property in both directions during bidirectional mapping with AutoMapper.
    CreateMap<Source, Destination>() .ForMember(dest => dest.PropertyToIgnore, opt => opt.Ignore()) .ReverseMap(); // Ignored in reverse mapping as well

  9. "Automapper ignore nested property mapping"

    • Description: Learn how to ignore properties within nested objects during mapping with AutoMapper.
    CreateMap<Source, Destination>() .ForMember(dest => dest.NestedObject.PropertyToIgnore, opt => opt.Ignore());

  10. "Automapper ignore property globally"

    • Description: Globally configure AutoMapper to ignore a specific property across all mappings.
    Mapper.Initialize(cfg => cfg.ForAllMaps((typeMap, mappingExpr) => mappingExpr.ForMember("PropertyToIgnore", opt => opt.Ignore())));

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