Automapper: complex if else statement in ForMember

Automapper: complex if else statement in ForMember

You can use the MapFrom method of the ForMember method in AutoMapper to define a complex if-else statement for mapping properties.

Here's an example of how to use MapFrom to define a complex if-else statement:

CreateMap<Source, Destination>() .ForMember(dest => dest.SomeProperty, opt => { opt.MapFrom(src => { if (src.SomeOtherProperty == "SomeValue") { return src.SomeThirdProperty; } else if (src.SomeOtherProperty == "SomeOtherValue") { return src.SomeFourthProperty; } else { return null; } }); });

In this example, we define a mapping from a Source class to a Destination class using AutoMapper. We use the ForMember method to specify the property that we want to map (SomeProperty in this case) and define a lambda expression for the mapping logic.

Within the lambda expression, we define a complex if-else statement using the MapFrom method. The MapFrom method takes a lambda expression that defines the mapping logic based on the source object (src in this case). We use if-else statements to conditionally map the SomeProperty based on the value of the SomeOtherProperty of the source object.

By using MapFrom with a lambda expression, you can define a complex if-else statement for mapping properties in AutoMapper. This allows you to customize the mapping logic based on the source object, and handle complex mapping scenarios.

Examples

  1. "Automapper complex if-else statement in ForMember"

    CreateMap<Source, Destination>() .ForMember(dest => dest.Property, opt => opt.MapFrom(src => src.Condition ? src.ValueIfTrue : src.ValueIfFalse));

    Description: Shows a basic example of using a simple ternary condition in ForMember to map a property based on a complex if-else statement.

  2. "Automapper conditional mapping with multiple if-else statements"

    CreateMap<Source, Destination>() .ForMember(dest => dest.Property, opt => opt.MapFrom(src => src.Condition1 ? src.ValueIfTrue1 : src.Condition2 ? src.ValueIfTrue2 : src.DefaultValue));

    Description: Demonstrates how to use multiple if-else statements in ForMember to handle various mapping conditions based on different criteria.

  3. "Automapper nested if-else statements in ForMember"

    CreateMap<Source, Destination>() .ForMember(dest => dest.Property, opt => opt.MapFrom(src => src.Condition1 ? (src.NestedCondition ? src.NestedValueIfTrue : src.NestedValueIfFalse) : src.DefaultValue));

    Description: Guides on handling nested if-else statements in ForMember to create more complex mapping conditions.

  4. "Automapper complex conditional mapping with custom resolver"

    CreateMap<Source, Destination>() .ForMember(dest => dest.Property, opt => opt.ResolveUsing<CustomResolver>());

    Description: Shows how to use a custom resolver to encapsulate complex if-else logic outside of the ForMember statement for better readability.

  5. "Automapper conditional mapping based on multiple source properties"

    CreateMap<Source, Destination>() .ForMember(dest => dest.Property, opt => opt.MapFrom(src => (src.Condition1 && src.Condition2) ? src.ValueIfTrue : src.ValueIfFalse));

    Description: Illustrates how to use multiple source properties in a conditional statement within ForMember for mapping.

  6. "Automapper if-else statement with null check in ForMember"

    CreateMap<Source, Destination>() .ForMember(dest => dest.Property, opt => opt.MapFrom(src => src.Property != null ? src.Property.Value : DefaultValue));

    Description: Guides on incorporating a null check in the if-else statement within ForMember for handling nullable properties.

  7. "Automapper complex condition based on enum values"

    CreateMap<Source, Destination>() .ForMember(dest => dest.Property, opt => opt.MapFrom(src => src.Status == StatusEnum.Value1 ? src.ValueIfStatus1 : src.Status == StatusEnum.Value2 ? src.ValueIfStatus2 : DefaultValue));

    Description: Demonstrates how to use complex conditions based on enum values in the if-else statement within ForMember.

  8. "Automapper dynamic conditional mapping in ForMember"

    CreateMap<Source, Destination>() .ForMember(dest => dest.Property, opt => opt.MapFrom((src, dest) => src.DynamicCondition ? src.ValueIfTrue : src.ValueIfFalse));

    Description: Illustrates how to use a dynamic condition involving both source and destination objects in ForMember.

  9. "Automapper if-else statement with method call in ForMember"

    CreateMap<Source, Destination>() .ForMember(dest => dest.Property, opt => opt.MapFrom(src => MapWithCondition(src))); private static string MapWithCondition(Source src) { return src.Condition ? src.ValueIfTrue : src.ValueIfFalse; }

    Description: Guides on calling a method with if-else logic from within the ForMember statement for better code organization.

  10. "Automapper complex if-else statement with AutoMapper 9.0+"

    CreateMap<Source, Destination>() .ForMember(dest => dest.Property, opt => opt.MapFrom(src => src.Condition ? src.ValueIfTrue : src.ValueIfFalse)) .ForAllOtherMembers(opt => opt.Ignore());

    Description: Demonstrates how to use ForAllOtherMembers along with a complex if-else statement in ForMember for explicit property mapping while ignoring all other members.

More Tags

technical-indicator numpy-slicing back-stack server linker-errors jquery-effects sockets live-streaming mouselistener image

More C# Questions

More Mixtures and solutions Calculators

More Stoichiometry Calculators

More Weather Calculators

More Fitness Calculators