What is AutoMapper used for?

AutoMapper in C# is a library used to map data from one object to another. It acts as a mapper between two objects and transforms one object type into another. It converts the input object of one type to the output object of another type until the latter type follows or maintains the conventions of AutoMapper.

Is AutoMapper a good idea?

AutoMapper is probably good for really small, short-lived projects or proof of concepts, but when you start to care about your code quality, you should definitely rethink all pros and cons regarding using AutoMapper.

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 AutoMapper in Entity Framework?

AutoMapper is an object-object mapper that allows you to solve the problem of manually mapping each property of a class with the same properties of another class. Before AutoMapper was introduced if we wanted to assign one object property to another object property then we were following a long procedure.

How do you implement AutoMapper?

Open startup. cs class file, add “services. AddAutoMapper(typeof(Startup))” in configure services method. Now the AutoMapper Package was installed and configured in our project.

How do I set up AutoMapper?

How to using AutoMapper on ASP.NET Core 3.0 via Dependency Injection

1. Install AutoMapper extension from Package Manager in your project.
2. Register a service in CinfigureServices on Startup.cs.
3. Create a model and a data transfer object.
4. Create an AutoMapping class file to register a mapping relation.

Is AutoMapper faster than manual mapping?

Inside this article, it discusses performance and it indicates that Automapper is 7 times slower than manual mapping.

Is AutoMapper fast?

Automapper is slower when mapping a single object and collections but there is one exception. Automapper is considerably faster when mapping a List of objects on . NET Core (It’s still slower on full . NET Framework).

What can I use instead of AutoMapper?

AutoMapper alternatives and similar packages

1. Mapster. 8.0 5.7 AutoMapper VS Mapster.
2. Mapping Generator. 6.1 6.5 AutoMapper VS Mapping Generator.
3. ExpressMapper. 4.5 0.0 L2 AutoMapper VS ExpressMapper.
4. AgileMapper. 4.4 2.8 AutoMapper VS AgileMapper.
5. Mapperly. 3.0 7.9 AutoMapper VS Mapperly.

Does AutoMapper create new instance?

When these collections map from the ViewModel to the Model, rather than map properties, a new instance of a UserPreference object is created from the ViewModel, rather than update the existing object with the ViewModel properties. And automapper configuration: Mapper.

How do I add a reference to AutoMapper?

Add the main AutoMapper Package to your solution via NuGet. Add the AutoMapper Dependency Injection Package to your solution via NuGet. Create a new class for a mapping profile….Otherwise following these 4 steps works:

1. Install AutoMapper.
2. Simply add some profile classes.
3. Then add below to your startup.

Where is AutoMapper configuration?

Where do I configure AutoMapper? ¶ Configuration should only happen once per AppDomain. That means the best place to put the configuration code is in application startup, such as the Global.