When should I use AutoMapper?
Use AutoMapper to eliminate the need to write tedious boilerplate code when mapping objects in your application. AutoMapper is a popular object-to-object mapping library that can be used to map objects belonging to dissimilar types.
How do I use AutoMapper to list a map?
Mapper. CreateMap(); peopleVM = Mapper. Map, List>(people); Mapper. AssertConfigurationIsValid();
How do I map AutoMapper?
AutoMapper allows you to add Conditional Mapping to properties that must be met before that property will be mapped.
- Public class UserProfile : Profile // this class inherits from AutoMapper profile class.
- {
- CreateMap()
- .ForMember(dest =>
- dest.Fname,
- opt => opt.MapFrom(src => src.FirstName))
Does AutoMapper map private properties?
By default, AutoMapper only recognizes public members. It can map to private setters, but will skip internal/private methods and properties if the entire property is private/internal.
Why you should not use AutoMapper?
If your objects are mapped with default Automapper config, you cannot find where a field takes its value. Even if you use good tooling (VS, Rider) and try to “Find usages” you won’t be able to find neither assignment nor usage. This is especially bad for developers new to project.
When should you not use AutoMapper?
If you have to do complex mapping behavior, it might be better to avoid using AutoMapper for that scenario. Reverse mapping can get very complicated very quickly, and unless it’s very simple, you can have business logic showing up in mapping configuration.
What is reverse map in AutoMapper?
By calling ReverseMap , AutoMapper creates a reverse mapping configuration that includes unflattening: var customer = new Customer { Name = “Bob” }; var order = new Order { Customer = customer, Total = 15.8m }; var orderDto = mapper.
How do I ignore property in AutoMapper?
If you look at the output window you can see that the value for the Address property is empty even though the Address property for the Source type has value. So, the AutoMapper Ignore() method is used when you want to completely ignore the property in the mapping.
How do Mapper maps work?
Automapper is an object to object mapper. Object-object mapping works by transforming an input object of one type into an output object of a different type. So, the automapper sits between the source and destination object. Now, in a console application add a nuget package automapper.
Is AutoMapper slow?
It works, but it’s very slow. I have a collection with 6893 objects with 23 properties (test environment, production should have much more).
Is AutoMapper good or bad?
As I mentioned above, the main advantage of AutoMapper is that it saves time spent on writing the mapping code. Anyway, even if you need to write that much mapping code, remember, it is not the bottleneck of development speed. You will save much more time on maintaining and refactoring the code later on.
Is AutoMapper a good idea?
AutoMapper will save you writing a LOT of boring mapping code and it will probably spare you from a few nasty bugs as well. The only thing you must be aware of is that the mapping uses convensions and you really want to follow these. As long as you do that, AutoMapper is a great tool!
