AutoMapper | A convention-based object-object mapper in .NET | Object-Relational Mapping library

 by   AutoMapper C# Version: v12.0.1 License: MIT

kandi X-RAY | AutoMapper Summary

kandi X-RAY | AutoMapper Summary

AutoMapper is a C# library typically used in Utilities, Object-Relational Mapping applications. AutoMapper has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

AutoMapper is a simple little library built to solve a deceptively complex problem - getting rid of code that mapped one object to another. This type of code is rather dreary and boring to write, so why not invent a tool to do it for us?.

            kandi-support Support

              AutoMapper has a medium active ecosystem.
              It has 9370 star(s) with 1714 fork(s). There are 384 watchers for this library.
              It had no major release in the last 12 months.
              There are 0 open issues and 2915 have been closed. There are 1 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of AutoMapper is v12.0.1

            kandi-Quality Quality

              AutoMapper has 0 bugs and 0 code smells.

            kandi-Security Security

              AutoMapper has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              AutoMapper code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              AutoMapper is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              AutoMapper releases are available to install and integrate.
              Installation instructions are not available. Examples and code snippets are available.
              AutoMapper saves you 75 person hours of effort in developing the same functionality from scratch.
              It has 49 lines of code, 0 functions and 480 files.
              It has low code complexity. Code complexity directly impacts maintainability of the code.

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            AutoMapper Key Features

            No Key Features are available at this moment for AutoMapper.

            AutoMapper Examples and Code Snippets

            No Code Snippets are available at this moment for AutoMapper.

            Community Discussions


            Creating subtype of a subtype with Table-per-Type (TPT) approach using ef core
            Asked 2022-Apr-03 at 14:39

            I am using the table per type strategy with a class named Assets as my super-type and another class PropertyAsset inheriting it. However, there are two classes inheriting the PropertyAsset class, named InternalProperty & ExternalProperty.

            Asset Table



            Answered 2022-Apr-03 at 14:39

            I'd need to create three entities separately (InternalProperty, then PropertyAsset and somehow use the Id of the newly created internal property, and then finally the Asset table itself.)

            Negative. Inheritance represents is a relationship, so you just need to create a single object of the desired type, add it to the context and EF Core will do the rest.

            this, along with polymorphic queries is the whole purpose of EF Core database inheritance strategies. The only difference between different strategies (TPH, TPT) is how the data is stored (single table with discriminator column and union of all base and directly or indirectly derived entities data vs multiple tables storing just the data associated with the corresponding level of the entity hierarchy), respectively how is queried. But in both cases, you simply add assignable object instance to the corresponding set. For instance, if you have



            Auto mapper with generic Class .NET Core 5
            Asked 2022-Mar-22 at 18:27

            I have searched on Stack Overflow and googled about it but I haven't been able to find any help or suggestion on this.

            I have a generic class BusinessResult that have a value property, and I want to create an Automapper in order to map value property of BusinessResult to value property of BusinessResult.

            Any suggestion to do that with Automapper in .NET Core 5?



            Answered 2022-Mar-22 at 18:25

            Automapper supports open generic registrations so you can create one from BusinessResult<> to BusinessResult<>:



            How to ignore empty list when serializing to json?
            Asked 2022-Mar-09 at 14:36

            I am trying to figure out how to serialize to a json object and skip serializing properties whose values are empty lists. I am not using Newtonsoft json



            Answered 2022-Mar-09 at 13:53

            You can add a dummy property that is used during serialization that handles this.

            • Add a new property with the same signature, but flag it with JsonPropertyNameAttribute to ensure it is being serialized with the correct name, and also with the JsonIgnoreAttribute so that it will not be serialized when it returns null.
            • The original property you mark with JsonIgnore, unconditionally, so that it will never be serialized itself
            • This dummy property would return null (and thus be ignored) when the actual property contains an empty list, otherwise it would return that (non-empty) list
            • Writes to the dummy property just writes to the actual property

            Something like this:



            Is there a way to do a one to many mapping with Automapper?
            Asked 2022-Feb-24 at 12:57

            I'm trying to map a password (comming in from a new user) to passwordHash and passwordSalt. The function I'm using to create these two values generates both values at the same time and return them. Is it possible to map to both of these values from the single password using Automapper? This is my attempt below.



            Answered 2022-Feb-24 at 12:57

            Instead of using a member mapping (ForMember), you could use BeforeMap or AfterMap, e.g.:



            How to setup AutoMapper in ASP.Net Core 6
            Asked 2022-Feb-23 at 05:35

            How to configure AutoMapper in ASP.Net Core 6

            I have a project which is written in .Net 3.1 so we had Startup.cs class.

            I am migrating it to .net core 6

            now when I put the following configuration in my .Net 6 Program.cs



            Answered 2022-Feb-22 at 05:15

            Install AutoMapper Package(version as per your proj requirement)



            Mock IConfiguration or IValueResolver
            Asked 2022-Feb-21 at 13:11

            I am using automapper in my Program.cs like this:



            Answered 2022-Feb-21 at 13:11


            EntityFrameworkCore. Update data in database. Method does not work correctly while data is being tracked
            Asked 2022-Feb-16 at 18:36

            I discovered one problem while creating my project. If someone refer to the issue I will be grateful. In my project I use a layered model. The repository layer (data access layer) that communicates with the database (DB) and the service layer (business logic layer) in which services and objects are implemented (data transfer object).

            As a result, there is a problem with the dbSet.Update method. When object (obj) comes into Update method as parameter, during the method call of the _db.Entry(dbSet.Local.FirstOrDefault(i => i.Id == obj.Id) ?? obj).State = EntityState.Modified or _db.Update(dbSet.Local.FirstOrDefault(i => i.Id == obj.Id) ?? obj) in the case of the first user's update (like from "view.xaml") obj is update and changes saving in the database (because dbSet.Local.FirstOrDefault(i => i.Id == obj.Id) returns null and obviously my obj gets into the _db.Update method). In case of a repeated user's update (in the "view.xaml" view) object obj -- when it gets into the _db.Update(dbSet.Local.FirstOrDefault(i => i.Id == obj.Id) ?? obj) method, it isn't take account, as the data context already tracks it and in the _db.Update method gets an object from dbSet.Local.FirstOrDefault(i => i.Id == obj.Id). Everything would be fine if this object in dbSet.Local was updated according to the type that comes from the user. However, this is not the case, it is tracked but not changed when the user edits its properties. It is not tracked properly rather due to the fact that I use services and, accordingly, data transfer object entities.

            In view of the foregoing, I have a question. How to make to update entity (by a new modified object) that are tracked, or how to manually assign the necessary object in dbSet.Local to replace the one stored there? or how to make Microsoft.EntityFrameworkCore.ChangeTracking not track changes to my objects in any way?

            In order to make changes not tracked I used the QueryTrackingBehavior.NoTracking parameter for the DbContextOptionsBuilder entity, but this only helps on the first load, and tracking is still used when the data is updated further. I also used the dbSet.Local.Clear() methods, but this is a bad idea, as data updating due to the deletion of the previous data from the database (like delete 20 rows from table and add one updated).



            Answered 2022-Feb-16 at 18:36

            It's unusual to be so heavily coupled to the local cache. The normal pattern is to call DbSet.Find(id), and update the properties of the entity that it returns.



            The constraint reference 'string' could not be resolved to a type
            Asked 2022-Feb-04 at 17:47

            Good morning everybody. I am creating an application on .net 5 it was working fine til last night and now i am testing and i am receiving an error message even without any change on the code so i really don't know why.

            That is the error:



            Answered 2021-Aug-16 at 15:22

            If you are using your controller something like [HttpGet("example/{param1:string}/{param2:Guid}")] then just remove :string. change it to [HttpGet("example/{param1}/{param2:Guid}")].

            And for your cors issue:-

            Use below code:-



            ASP.Net Core 5 ConfigureServices using reflection based on instance created by a service
            Asked 2022-Jan-12 at 12:01

            I created a .Net Core 5 API having 2 types of models:

            • Entities (used by Entity Framework Core)
            • DTOs (Data Transfer Objects for requests and responses, replacing "{Property}Id" properties from Entity with "{Property}Code" in DTO)

            I have a service responsible of mapping Entities types to Dtos types added as singleton in ConfigureServices:

            services.AddSingleton(typeof(IEntityDtoMappingProvider), typeof(EntityDtoMappingProvider));

            The service EntityDtoMappingProvider has a method which returns the mapping between Entities and Dtos for an assembly through reflection described by this interface:



            Answered 2022-Jan-11 at 13:55

            You can register a service factory which accepts the service provider instance and uses that to resolve other services. For example:



            Memory increases with each request when using AutoMapper's ProjectTo with expand option
            Asked 2021-Dec-20 at 20:00

            I'm building a .NET 5 REST API based on CQRS/MediatR and I noticed a linear memory increase when stress testing my application. I did some profiling and saw a large number of object instances from the namespace System.Linq.Expression was taking up all the space. All these instances are related to the MapperConfiguration of AM.

            I use AutoMapper to map my entities to the DTOs, to do so I mainly use the following ProjectTo extension method :



            Answered 2021-Dec-20 at 20:00

            This leak is fixed in the MyGet build. Details here.


            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


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