What is an AutoMapper profile?

automapper Profiles Basic Profile Profiles permit the programmer to organize maps into classes, enhancing code readability and maintainability. Any number of profiles can be created, and added to one or more configurations as needed. Profiles can be used with both the static and instance-based APIs.

What is AutoMapper configuration?

AutoMapper is the convention-based object to object mapper. It maps the properties of two different objects by transforming the input object of one type to the output object of another type.

What is AutoMapper in asp net core?

AutoMapper is a component that helps to copy data from one type of object to another type of object. It is more like an object-object mapper. According to the AutoMapper docs, Object-object mapping works by transforming an input object of one type into an output object of a different type.

How do I register 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.

Why is AutoMapper bad?

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.

Why do we need 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.

Why do we use 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). With a loop it takes 00:02:32.8118534 to map everything.

Where is AutoMapper used?

AutoMapper is a popular object-to-object mapping library that can be used to map objects belonging to dissimilar types. As an example, you might need to map the DTOs (Data Transfer Objects) in your application to the model objects.

How do I set AutoMapper on startup?

In Startup Class, we Need to Initialize Profile which we have created and also Register AutoMapper Service. Mapper. Initialize(cfg => cfg….Otherwise following these 4 steps works:

  1. Install AutoMapper. Extensions.
  2. Then add below to your startup.
  3. Then simply Inject IMapper in your controllers or wherever you need it:

Should I use AutoMapper or not?

LINQ query extensions have the best performance of any mapping strategy, so it’s better to use it as much as you can. If you have to do complex mapping behavior, it might be better to avoid using AutoMapper for that scenario.

Is AutoMapper a good idea?

AutoMapper is a great tool when used for simple conversions. When you start using more complex conversions, AutoMapper can be invaluable. For very simple conversions you could of course write your own conversion method, but why write something that somebody already has written?

Why is automapper IOC friendly out of the box?

Since we’re a big user of IoC containers, namely StructureMap (which was obviously a big inspiration in the design of the configuration), I tried to make AutoMapper IoC-friendly out of the box. It wasn’t friendly at first, Jeffrey Palermo had to prod me…a few times on this one.

Is the configure method in automapper obsolete?

In earlier versions the Configure method was used instead of a constructor. As of version 5, Configure () is obsolete. It will be removed in 6.0. Configuration inside a profile only applies to maps inside the profile. Configuration applied to the root configuration applies to all maps created.

Which is the latest version of automapper profile?

An example of tests for Automapper profile (I used Automapper in version 10.0.0 amd NUnit in version 3.12.0 ):

What is the default injection mechanism for automapper?

There is a NuGet package to be used with the default injection mechanism described here and used in this project. You define the configuration using profiles. And then you let AutoMapper know in what assemblies are those profiles defined by calling the IServiceCollection extension method AddAutoMapper at startup:

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