Automapper constructusing. You define the configuration using profiles.
Automapper constructusing 4. If you don't want to modifiy DestEntity class by adding a new constructor you can use ConstructUsing method like below: cfg. ForMember(d => d. DataYYY)); As i have quite a lot of mappers to do i have split them within This instruct AutoMapper to check for the option ConstructServicesUsing method that can be provided during the mapping instruction. Map functions, you may notice that the ORM will query all the fields of all the objects within a graph when AutoMapper is attempting to map the results to a destination type. ConstructUsing(source => new PersonViewModel(_kernel. Entities. Automapper create map method. Any thoughts of what's going on here ?? Thanks in advance! I am using automapper in my asp. In your case you are returning a Child2 object with the Id value set to 2 (as returned by the ctx. ConstructUsing(s => Mapper. MapperConfiguration. Base members don't get mapped. Categories)); ConstructUsing() is used to generate and populate the To map these I use ConstructUsing, a solution from another stack overflow post. Namely: ConstructUsing using lambda statements, method groups, or ConstructUsing() is used to create the destination object, where the value should be stored in. YYY, opt => opt. ConstructUsing( f => new Target { PropVal1 = The problem is that AutoMapper configuration is usually singleton. And then you let AutoMapper know in what assemblies are those Custom Type Converters . Map<PolicyResponse>(policy. AssertConfigurationIsValid, it complains that there is no mapping (rule) for the member IsDeleted in the (class) mapping rule from MyObject to MyFlatObject. I am trying to map two entities with a many to many relationship that inherit from an abstract base class into Dtos that also inherit from their own abstract base class. Put mappings creation to application start code (or before first usage of mapping). While it is a nested child, I am using ForPath instead ForMember. The ConvertUsing expression-based method will be used for both in-memory mapping and LINQ projections. ConstructUsing((Source s) => AutoMapper. Map < ContestEditableViewModel, Model. 2) I'm trying to map a nullable boolean to a destinations object property (dest. Create( src. CreateMap<SourceClass, DestinationClass>() . Instead, Automapper is mapping null back on to Value1 in Dest object after construction. Second - you don't need to re-create map each time you need to map single object. Map(). After it constructs the object it continues mapping as usual. Namely: ConstructUsing using lambda statements, method groups, or AutoMapper is able to use construct Destination objects using the constructor and simple name resolution as in #361. For example here's a source and destination class. 1 not mapping properties when destination class has constructor Automapper: Cannot create instance of abstract type for collections. Here is an example that reproduces this. MapFrom(dto => dto. 0, where dynamic mapping was removed, you should stick with 8. DataXXX)). Map<TypeB>(instanceOfA); // instanceOfB. 0 Upgrade Guide. 0 the API of AutoMapper has been changed. We use AutoMapper to map from Entities (NHibernate) to DTO's and bac So automapper needs to know that A maps to B, CA maps to CB, and when creating a B populate it's MyI prop with a CB, how do I specify this mapping? automapper; . Child1) line). AutomapperConstructorTest { class Program { static void Main(string[] args) { Conditional Mapping . Some time ago we updated it from a very old version (2. A single Type to another single Type; Type -> [Type]: AutoMapper can also set up Type Converter from a single Type to an Array Type. Reflection. EventType? PS> I know this is bad design and it really should be resolved by refactoring the whole thing ( eg. CreateMap<Source, Dest>() . It seems to me it is not working. See the Sample Console Applications ConstructUsing. From version 4. I read this answer and tried adding an explicit mapping from the type to itself (similar to the mapping of User to User in this answer) and now it works. Ignore()); at the end of your profile. ConvertUsing<NullableBoolToLabel>(); And here is the converter class: Queryable Extensions . ConstructUsing(sourceItem => { var destItem = new DestEntity Is it possible with AutoMapper? I have tried this and I was not surprised when it failed: config. 0). To make sure that the created entity is always bound to the session (we use NHibernate), we have the following in the Automapper configuration: var By default, AutoMapper only recognizes public members. Children)) . Strings)); } } Type of Type Converters . 2 AutoMapper 8. This has lead me to ConstructUsing():. I can configure all i need, but stuck on how to combine open generic and custom construct. Take a look at the corresponding pull request for further information. You could override the mapping behaviour and, for example, configure it to invoke a specific constructor, but that basically defeats the purpose of AutoMapper because then you are doing the mapping manually, and you've only succeeded in adding a At the time of writing this answer, AutoMapper will do this automatically (with a simple CreateMap<>() call) for you if the properties match the constructor parameters. This instruct AutoMapper to check for the option ConstructServicesUsing method that can be provided during the mapping instruction. CreateMap<TypeA, TypeB>(). Why don't the properties from my subclasses I think that will have to be done outside the mapping. Property1 will be "Some 使用ConstructUsing. second, ctxt. Using mapping configuration for System. You switched accounts on another tab or window. You need a value resolver here. AutoMapper will automatically reverse map “Customer. Share. ConstructUsing(s => new RestrictedName(s. You can absolutely do exactly what you want using a custom ITypeConverter<TSource, TDestination> implementation. 2. CreateMap<SourceEntity, DestEntity>(MemberList. See the Sample Console Applications below. ctor(Action1 configure) at Using ConstructUsing, AutoMapper didn't know that that call actually maps all of the properties and we can just ignore the property mappings that don't match. LINQ projections. I've got a public method exposed on this class that is used to set values to the property. Commented Apr 10, 2020 at 13:27. x version includes a context object you can use just like you're trying to do. QueryableExtensions namespace): var dst = src. Improve this answer. Value converters are a cross between Type Converters and Value Resolvers. #3681. You define the configuration using profiles. Factory. You can fix this by calling . However, if this logic pertains only to the mapping operation, it would clutter our My understanding was that AutoMapper would automatically create an implicit mapping between objects of the same type. Reload to refresh your session. Automapper Map Members in the nested class. Mapper. Command and also part of CreateDeviceAppViewModel so what's going on here is that the AutoMapper is ignoring the ConstructUsing method because it just mapped all the properties (including 'Thumbnail' property). AutoMapper using the wrong constructor. Profile { protected override void Configure() { AutoMapper. There are 4 types of Type Converters: Type -> Type: This is what we've just used above. ConstructUsing and telling AutoMapper to use the no-args constructor: With Automapper (6. ConstructUsing((src, ctxt) => new Dest(src. Customizing reverse mapping . You can apply Ignore() as there is no mapping from the source and thus it will not complain. Initialize(cfg => { // Adding "Construct" configuration cfg. 0 Upgrade Guide; 10. CreateMap for the same set of source and destination several times, nothing will happen at all as the Mapper. Using a ValueConverter in combination with ForMember is working How to use Mapper. Additionally, AutoMapper 9. This uses the last of the two constructors above (3 params): You know about ConstructUsing and ConstructUsingServiceLocator? – Lucian Bargaoanu I have found the ConstructUsing method, but that requires me to specify the parameter value at time of configuration. The 5. 175 8 8 bronze This is a cross platform library, written in . Empty)) Note that you can use default values as arguments for the constructor's parameters, Automapper will still correctly map all other SomeContructorParam emptyParm = null CreateMap<SomeEntity, SomeModel>() . 0 in order to skip all unmapped properties you just need put. To map lists of objects Without extra configuration, AutoMapper requires a flattened destination to match the source type’s naming structure. You might have set up your ConstructUsing to work like that, but I can't assume it, so you have to do ConstructUsing per derived type (which I think is easier to Queryable Extensions . If I have a CustomerResource object, for example, and want to map it into Customer (domain object), I have to instantiate it: CreateMap<CustomerResource, Customer>(). Automapper: Missing type map configuration or unsupported mapping. Today I upgraded a fully functioning application using AutoMapper v1. Map<CA, CB>) ; CreateMap<A, B>(); } } Share. You don't need to map each item in a loop. AutoMapper relies on property setters to do its work, so if you have read-only properties, AutoMapper won't be of much use. For example: I use ConstructUsing, object initializer coupled with ForAllMembers ignore e. Or a custom AfterMap, that's also inherited. CreateMap<OpenName, RestrictedName>() . CreateMap<TSource, When mapping between two different objects, like domain objects and DTOs, Automapper is one of the tools you can use. CreateMap<DataFullXXX, XXX>() you could do . Mapping object with AutoMapper. Ask Question Asked 5 years, 1 month ago. Im trying to get automapper to map the parent object within the parameter of ViewModelB and Model B. To construct proxy i need to know requested destination type. AutoMapper can map to destination constructors based on source members: public class Source { public int Value { get ; set ; } } public class SourceDto { public SourceDto ( int value ) { _value = value ; } private int _value ; public int Value { get { return _value ; } } } var configuration = new MapperConfiguration ( cfg => cfg . removing the EventType and creating subclasses ) Unfortunately I inherited this code and just need to resolve bugs without spending to much time. I apply this globally to my profile, and it works for true and false but not for null. ConstructUsingServiceLocator(); }); I am using ASP. Everything was fine but we had one Problem. You signed out in another tab or window. Data. ---> System. If you’re not interested in upgrading to 9. If you try create a mapper for the KeyValuePair combination you will quickly work out that you can't directly as the Key property doesn't have a setter. Without Automapper, developers would have to create logic to map every property of their objects together. AutoMapper requiring mapping AutoMapper no longer creates maps automatically by default CreateMissingTypeMaps was deprecated and its default value changed to false. Mapper. Leaving this here in-case this is the first search result like it was for me. 1. One option I though of: The ConstructUsing expression-based method will be used for both in-memory mapping and LINQ projections. CreateMap(mySource, myTarget). [Type] -> Type: The opposite is also true [Type] -> [Type]: Last but not least, AutoMapper can set up Type Converter between two Although AutoMapper covers quite a few destination member mapping scenarios, there are the 1 to 5% of destination values that need a little help in resolving. In theory, Automapper saves developers time and code by “auto” mapping objects they specify. CreateMap<MySourceType, MyDestinationType>(); I would like to have a constructor of MyDestinationType which have a MySourceType parameter, then automatically initialize properties of the type under creation with the source like this: Then you can make the mapping with the ConstructUsing method, to tell AutoMapper to call the constructor that you created. CreateMap<SourceType, DestinationType>() . FromDateTime(x. This method requires a parameter. ConstructUsing(a => new B2()). AfterMap((s, d) => d. It will register all necessary classes and interfaces of Jimmy Bogard's AutoMapper implementation to the autofac-container so you can use AutoMapper and object-mapping right ahead without worrying about setting up required infrastructure code. ConstructServicesUsing(t => new Dest(5)); // Tell AutoMapper to use already defined configuration to construct Dest class cfg. CreateMap<ObjectFrom, ObjectTo>() . So my question is How can I map to a class, with read only properties, using Automapper; without having to use . HasValue ? DateOnly. Namely: ConstructUsing using lambda statements, method groups, or So options is: 1) Use constructor without parameters. Project (). MapFrom<PropertyResolver>) . To How to use Mapper. The reason for this is that I can then easily use the language as key to get the available parameters/options for that language. Property,config=>config. I'll try to explain my problem: So I have the db and api models like this: public class ApiMod Also I want these mappings to use the full automapper goodness and be able to map lists of customer entities into list of customer DTOs. Contest. – Rody. _mapper. NewWindow)); var at AutoMapper. None) . 1. I need to map to a protected property on a class using Automapper. However, it fails to consider custom mapped members in its constructor resolution process. Action`3<!0,!1,AutoMapper. The text was updated successfully, but these errors were encountered: Configure the IMyInterface mapping to construct your ImplementedClass, . That wouldn't work for B1. 1 and I am coming across some issues that I never encountered using the previous version. SerializeObject(x as AutoMapper. AutoMapperMappingException' was thrown. This is because it allows you to perform dynamic mapping based on an existing object whose type is only known at runtime instead of hard-coding a type in the generics. Here is what I have in my AutoMapper profile: CreateMap<bool?, string>() . For example: public class UserProfile : Profile { private readonly IUserManager _userManager; public UserProfile(IUserManager userManager) { _userManager = userManager; CreateMap<User, UserViewModel>() For Automapper 5. When invoking Map, you can configure the conversion context with your custom parameter(s) using the second callback argument. AutoMapper 8. Custom Type Converters; Custom Value Resolvers; Conditional Mapping; Null Substitution; Value Converters; Value Transformers; Before and After Map Action; Upgrading. According to the AutoMapper Documentation, I should be able to create and use an instance of a Custom Type Converter using this:. This is my profile for the above at the moment AutoMapper’s Solutions: ForCtorParam and ConstructUsing. User. answered Oct 18, 2013 at 23:11 It looks like you're using an older version of AutoMapper. GetEffective()); Update: In order to get the mapping to call GetEffective I would suggest making GetEffective return a different type. ConstructUsing(Mapper. Map<Child1, Child2>(src. Here's my code: void Main() { var mockMapper = new MapperConfiguration(c => { c. Id value will be saved in We are using Automapper to map DTOs to entities. But the username in the request is not singleton-scope. ConstructUsing(x => new DestinationClass(x. ForMember(x=>x. But I have a problem with custom mapping. Value) : null); AssertConfigurationIsValid will work without any problems, but if you use the mapping, you will get the following error: As I now need to manually map every property, in the correct order, in the . Otherwise it should use the default conversion but not skip the property. 0 Upgrade Guide; 12. Automapper map from one object to nested objects. This is because AutoMapper is finding this CableIDDTO constructor: public CableIDDTO(string panelID1, string panelID2, int sequenceNo) and calling it, setting sequenceNo. Map<Source, Destination>(new Source { Value = 15 }, opt => opt. cfg. When you want to project source values into a destination that does not exactly match the source structure, you must specify custom member mapping definitions. For example, we might want to turn this source structure: This generates Automapper's interface proxy class types but I think it should create ImplementedClass 's instance. Automapper - Inheritance mapper not working with type converter. CreateProjection < . Here is an AutoMapper 8. Automapper using constructor with default parameters. first, src. ProfileMap. Seal() at AutoMapper. Of course, if things don't match up, then using . Queryable Extensions . How can I map a value to this class? Destination Class: public class Policy { private Billing _billing; protected Billing Billing { get { return _billing; } set { _billing = value; } } My business object also has a child collection of child business objects. Related. It can map to private setters, but will skip internal/private methods and properties if the entire property is private/internal. NewGuid()}", JsonConvert. CreateMap<MenuTable, Menu>(). Name)); is it possible for me to add the ability to use the method AddEmailAddresses with AutoMapper? I've tried CreateMap<NewPatient, Patient>() . Get<ISomeDependency>) AutoMapper 8. EnumMapping; Extensibility. Mapping lists of objects with parameters. ForAllMembers(opt => opt. However, after the object has been created, the default mapping will still be applied. 0, AddAutoMapper is part of the core package and the DI package is discontinued. AutoMapper gets around this though by It is used to configure AutoMapper to use certain constructor to instantiate a class. ConstructUsing(x => new ObjectTo(arg0, arg1, etc)); To map Objects that need Constructor Parameters using Automapper you need to use the ConstructUsing Method while Creating the Map. 10. AutoMapper with ConstructUsing to map child properties not valid in test, but works in production. 2) Say mapper take paramether from sorce - . Part of the data profile class: The ConstructUsing expression-based method will be used for both in-memory mapping and LINQ projections. Map with ConstructUsing and AutoMapper? 2. If you were relying on this, your app will no longer work by default. ConstructUsing(src => { return JObject. Identity 3. The mapper was changed to. Commented Apr 10, 2020 at 13:10. My primary goal is to keep the architecture clean by separating concerns. ConstructUsing((TypeA a) => new TypeB(_id)); TypeB instanceOfB = Mapper. g. In order to get AutoMapper to work, I had to include a setter on the collection property in my business object or the collection would always be empty. Subject: Re: [AutoMapper] CreateMap. Hot Network Questions If every denomination is skeptical of every other denomination, why shouldn't non-Christian outside observers be skeptical of Derived type map does not use parent ConstructUsing: Destination needs to have a constructor with 0 args or only optional args. ConstructUsing(src => new SomeModel(emptyParm)); Projecting. The exception said it was missing a map from . ConstructUsing((src, context) => DestinationType. IMappingExpression`2. The ConstructUsing expression-based method will be used for both in-memory mapping and LINQ projections. ConstructServicesUsing(childContainer. Create a mapping profile for the return type of GetEffective to PolicyResponse then use ConstructUsing in the definition Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I need to convert one class to another using automapper and my objects looks like this: public class Foo { public List<object> Objects { get; set; } } public class Bar { public List It's not clear for me if I should use ConstructUsing() together with ForMember(). 0. public class PersonViewModel { public int Id { get; set; } public string Name { get; set; } } public class I somehow want the default value in DestClass to win. Thanks for pointing me in the right way ! I managed to accomplish it with the "ConstructUsing" method as follows: CreateMap<SomeDto, JObject>() . First we had the following mapper rule: Mapper. As of version 8. Automapping one table entity to two DTO subclasses. 8. Engine. ConstructUsing() method. From config. DataYYY)) B>(). CreateMapper(); } public class Wow that worked, but now I found another problem in my code, see I have a Nullable<MessageType> property in my Message class? That's an Enum, while I can send the string value for a value in my Enum and store the int value in the database, AutoMapper doesn't know how to convert that into the string representation, throwing the message LINQ to Entities Everything works with simple map (without ProjectTo), but with projection my sql looks like this (doesn't join with employees table) because of Func param, not Expression at ConstructUsing (I got 2 employees with nullable fields): Had the same issue after adding AutoMapper to another project. CreateMap<Source, Destination>() . ConstructUsing with profile + AssertConfigurationIsValid . The ICollection<TblParameters> only contains entries with the same id. Starting with version 13. It’s not going to do it. I cannot find a way in the Automapper documentation to do just that. AfterMap(System. You can’t inject dependencies into Profile classes, but you can do it in IMappingAction implementations. 0. AddProfile<MapperProf>(); }) . Dependency Injection Examples ASP. ConstructUsing(col => new ChildCollection(obj)); Notice Background: For my own clarity / self education, I am trying to implement a simple Order Entry application using TDD + DDD. 0 Upgrade Guide; 11. Follow edited Oct 21, 2013 at 10:51. Is there a way to do the mapping using Automapper. So you should use ConstructUsing() with ResolutionContext and call ResolutionContext. I have problems using ConstructUsing. Type converters are globally scoped, so that any time you map from type Foo to type Bar in any mapping, the type converter will be used. If your ORM exposes IQueryable s, you can use AutoMapper’s At this moment Automapper gets confused. – Simon Elms. then you can use ConstructUsing like this. Sometimes, you need to take complete control over the conversion of one type to another. Did adding . CreateMap<SourceRecord, Record>() . Microsoft. 1 Automapper not invoking constructor. I cannot get the simplest case on the AutoMapper website to work nor can I get the more advanced IMemberValueResolver case to AutoMapper allows now (I am not sure, since when) to map properties with private setters. Custom MappedEntityDomainManager throws StackOverflowException. Add a comment | To migrate, replace all usages of ProjectUsing with ConvertUsing. NET Core but when I inject service in the constructor it does not work. AutoMapping Object with Constructor Arguments. IDataRecord to ConstructUsing. Task<ICollection<Data>> to Task<ICollection<DataItem>>. Net Framework ForAllMaps, ForAllPropertyMaps, Advanced and other “missing” APIs Some APIs were hidden for normal usage. netstandard 2. Namely: ConstructUsing using lambda statements, method groups, or The documentation is very sketchy on the AutoMapper website. 1 to now use AutoMapper v2. The data flow is as follows: Model->DomainModel->ViewModel. ForAllOtherMembers(x=>x. Contest > (viewModel You need to tell AutoMapper that you don't intend to have it construct the destination type by calling CreateMap<TSource, TDest>(). You have to think what it is a store of - in this case KeyValuePairs. The second test AutoMapper_ConstructUsing_Test_IsValid will fail, while the other two will complete successfully. DependencyIn v8. System. Claims The ConstructUsing expression-based method will be used for both in-memory mapping and LINQ projections. Items["Id"])); I'm using AutoMapper to map objects in domain and API resources. service) 3) Pass paramether directly - same like 2, but u can get it from IoC container if u have it, for example . I'm not exactly sure how or why it's doing that--i'll continue to dig. var model = AutoMapper. ; In the Convert method of your customer type converter, you can recover your parameter(s) from the If Automapper can't create an instance of the destination using a default constructor, you can give Automapper a function that calls a constructor and returns the new instance with ConstructUsing. Map(s. A simple example is the follo When calling Mapper. ConstructUsing(x => x. Map is used only to determine what type the return value should be, and is not actually modified. Fesslersoft. Ignore()) work with the first suggestion? So what happens here is that you initialize Automapper in a non-static way (isn't clear from your original post, but I could deduct that because my comment seemed to have solved your problem), but you are using Automapper statically within the ConstructUsing method. I have four layers (for now) Persistence/DAL with a CustomerRepository class that can perform GetById, Save, operations on the "aggregate root", a Customer and its The ConstructUsing expression-based method will be used for both in-memory mapping and LINQ projections. ConstructUsing(myConverter); This piece of code does not build with AutoMapper 8, because I have to use expressions. Namely: ConstructUsing using lambda statements, method groups, or I am already using automapper for the 1st way (JSON to SomeDto), it involves many properties and custom resolvers. CreateMap(); This worked until the web api method became full async. 0, that serves as an extension for autofac's containerbuilder. . Children, opt. You will most likely have to find a different solution rather than using AutoMapper. The mapped dictionary Just map the result of GetEffective. NET Core . Automapper 8 mapping not working properly. Hello! I need to map simple source type to proxied generic. It should be singleton because constructing it is quite heavy. You signed in with another tab or window. (in AutoMapper. Release notes. But i don't know how? Re I'm using AutoMapper to map my db models with my api models. Follow answered Jan 18 at 13:01. If your ORM exposes IQueryable s, you can use AutoMapper’s You can use one of the ConstructUsing overloads to tell AutoMapper which constructor should it use. ConstructUsing() is the way to go. Hot Network Questions Why Gaussian Process Regression (GPR) is non-parametric? I have an AutoMapper converter that takes a Nullable<bool>/bool? and returns a string. CreateMap<Source, Target>() . Net Standard 2. Moniker Moniker. ConstructUsing(cr => ) In my case, there is no public Customer-constructor. Sample Console Application C# using System; using AutoMapper; namespace de. ConstructUsing(source => new PersonViewModel(source. If your ORM exposes IQueryable s, you can use AutoMapper’s Seems to me that the ConstructUsing runs after the constructor. MapFrom(q => q. You cannot have separate configuration for in-memory vs. I found the best solution for me is to rollback the Automapper version to 9 and the DI respectively. If you set the overrides for IMappingExpression like this Mapper. 这将允许您指定在映射期间使用哪个构造函数。 但是所有其他的属性将会按照惯例自动映射。 还要注意，这与ConvertUsing不同， ConvertUsing使用的是不会继续按照惯例映射的，它会让你完全控制映射。. – To migrate, replace all usages of ConstructProjectionUsing with ConstructUsing. MapFrom(s=>s. Map with ConstructUsing and AutoMapper? 3 Automapper - Inheritance mapper not working with Construct. 3. Namely: ConstructUsing using lambda statements, method groups, or Automapper ConstructUsing not working as expected. All collections are mapped by default If yes you can then use ConstructUsing in your mapping: Automapper, Mapping one object member type to multiple concrete type. If your ORM exposes IQueryable s, you can use AutoMapper’s After upgrading to AutoMapper 8 my custom converters are ignored. Map<ActualDestination>(s)); Unflattening is only configured for ReverseMap. ForMember(q => q, option => option. To instruct AutoMapper to recognize members with other visibilities, override the default filters ShouldMapField and/or ShouldMapProperty : After I configure one simple mapping for AutoMapper like: Mapper. Viewed 5k times 6 . MissingMethodException: Method not found: 'AutoMapper. Automapper main interface ConstructUsing switch for inherited child objects. But as soon the source value is null, the entire destination property (dest. NET applications, with a special emphasis on the ForCtorParam and ConstructUsing To map Objects that need Constructor Parameters using Automapper you need to use the ConstructUsing Method while Creating the Map. var dest = Mapper. And then use the ConstructUsing option in the Source, Destination mapping to do the translation from the Source to the ActualDestination: AutoMapper. FromObject(new { objectId = src. Is there any way of creating the mappings without the ConstructUsing clause? I thought that having the more specific version of CreateMap would have taken care of this for us, but if I don't have the ConstructUsing clause, AutoMapper tells me "Instances of abstract classes cannot be created". Existing ConvertUsing usages . CreateMap<UrlPickerState, Link>() . To convert to string is easy, however to convert the string back to type I wrote a ValueConverter. The problem is that my app already has several DestObjects with fairly complex constructors. Product)) . The following example shows how to connect an IMappingAction accessing the current HttpContext to a Profile after map action, leveraging dependency injection: KeyValuePair<,> objects can be mapped by Automapper as long as the Key and Value objects themselves can be mapped: See the sample/fiddle The only mapping that could be usefull is a cfg. Namely: ConstructUsing using lambda statements, method groups, or Custom Type Converters . 2 of Automapper it's deprecated to use static method Mapper. In order to get AutoMapper to use Windsor to create the target type, you need to configure two things: Tell AutoMapper to construct services using Windsor; Tell AutoMapper (per-mapping) to actually use the above configuration We used AutoMapper since years now and were very happy with it. Second, when you are using AutoMapper If you need to convert object types from one to another, writing it by hand could be a pain, check out AutoMapper. Register(IConfigurationProvider configurationProvider) at AutoMapper. First of all, Automapper supports mapping of collections. Net Core 2. Options. There is a NuGet package to be used with the default injection mechanism described here and used in this project. The ConstructUsing expression-based method will be used for both in-memory mapping and LINQ AutoMapper can map to destination constructors based on source members: public class Source { public int Value { get ; set ; } } public class SourceDto { public SourceDto ( int value ) { _value This article focuses on leveraging AutoMapper for mapping classes to records, a common scenario in modern . Existing ConstructUsing usages¶ The change from Func to Expression may break some existing usages. In doing so ResolveUsing was consolidated with MapFrom. ResolutionContext>)'. AutoMapper allows you to add conditions to properties that must be met before that property will be mapped. IMappingExpression`2<!0,!1> AutoMapper. ConstructUsing()` and manually map every property into the constructor? The problem you are having is because AutoMapper is struggling to map the contents of the Dictionary. Second, when you are using AutoMapper to map between classes, you must specify every parameters. CreateMap<Task<List<Data>>, Task<List<DataItem>>>(); See that the main Object the automapper does automatically without mapping the fields, but, when it comes to the Object Value Attributes I had to map one by one so it would understand where the information is sourced Value Converters . Internal and call the Internal extension method on the configuration object. 6. AutoMapper requiring mapping members and constructor. AutoMapper - Conditional Mapping. @alsami thank u for your response but I think that I have found where's the problem, the Thumbnail property is part of CreateDeviceApp. Existing ConstructUsing usages The change from Func to Expression may break some existing usages. It happens I have a serialized version of Calc, its properties and the options properties as another single object. The responsible code for setting the converters is the following: new MapperConfiguration(cfg => cfg. YYY = Mapper. ForMember(m=>m. I would instead do something like: AutoMapper. Reading through the Automapper source code, I found a workable solution which I described below. 0 Upgrade Guide . CreateMap<TSource, TDestination>() does not set up any extensions for a mapping configuration. API Changes; 13. OpenInNewWindow,map=>map. Now I'm trying to do what @jimmy-bogard said in his answer, but unfortunately still with no success. Value converters are scoped to a single map, and receive the source and destination objects to resolve to a value to map to the destination How can I tell automapper to change behaviour in the SubType mapping based on the Event. IsEnabled. AutoMapper’s ForCtorParam method facilitates mapping class properties to record constructor parameters. Profile I'm new with AutoMapper and have problems with mapping. ConstructUsing(dest => new Patient(dest. Which kinda defeats the point of using Automapper. This works great in the application, but in the test the configuration is not valid for AutoMapper. ctor(MapperConfigurationExpression configurationExpression) at AutoMapper. There's two solutions for this: 1) Use Automapper statically I need to use a service layer in the AutoMapper profile class in ASP. Jimmy said: However, you CAN use ConstructUsing to build out the initial destination object. For cfg. Namely: 12. How to use Mapper. As per the method documentation: // Summary: // Disable constructor validation. 2 and the AutoMapper. Value). Name)) Derived type map does not use parent ConstructUsing: Destination needs to have a constructor with 0 args or only optional args. Hot Network Questions Obstructions to Fpqc Sheafification Do countries other than Australia use the term "boomerang aid"? In Mad Men, does the Dr Pepper Machine from 1960 prevent people from taking more Note: My solution without ConstructUsing. Many times, this custom value resolution logic is domain logic that can go straight on our domain. prefix}{Guid. But everything I have tried is failing or I can only create new instances of the parent object (using ConstructUsing), not map the one in the constructor. How can I map a List<string> to List<Class>? Usecase: from the Webservice I'm getting a class with a list of string but in my MVC Viewmodel, I want to have Class instead with a single AutoMapper. Categories, option => option. Most users don’t need The ConstructUsing expression-based method will be used for both in-memory mapping and LINQ projections. Name)); which works with this code. First, you need to specify you want to use a AutoMapper is great if your models align nicely, but if you need a bit more control over the mapping I tend to put these in a static mapping method in a dedicated helper or within the MVC Controller. For flattening, you can use IncludeMembers. AutoMapperMappingException : Trying to map System. automapper: mapping depend on other properties. Dependency Injection . This can be used in situations like the following where we are trying to map from an int to an unsigned int. MyClass Exception of type 'AutoMapper. Map with ConstructUsing and AutoMapper? 1. Automapper is used for mapping between those. There's a good getting started on the project's wiki. MapFrom(s => s. This issue was moved to a discussion. In my model I want to use a string where in my dto I use an Enum. Namely: ConstructUsing using lambda statements, method groups, or delegates; Dual configuration of ConstructProjectionUsing and ConstructUsing; For the first case, you may either: Convert to a lambda expression; Move to the Func-based overload It uses Automapper's ConstructUsing to return context. If you want unflattening, you must configure Entity-> Dto then call ReverseMap to create an unflattening type map configuration from the Dto-> Entity. TargetInvocationException: Exception has been thrown by the target of an invocation. Hot Network Questions Can doctors administer an experimental treatment without patient consent in an emergency? Will a body deform if there is very huge force acting on it in a specific direction? Is a cable run through a crawl space to the exterior The ConstructUsing expression-based method will be used for both in-memory mapping and LINQ projections. That applies per map and also per member. (obj => obj. Automapper - Mapping from source child object to destination is including parent values. CreateMap<ProductWithCategories, ProductViewModel>() . var config = new Now I want to use AutoMapper to map an ICollection<TblParameters> into a Dictionary<string, Dictionary<int, string>>. TypeA instanceOfA = new TypeA() { Property1 = "Some string" }; _id = 3; Mapper. This means that the Parent. DisableCtorValidation(). public class DtoToEntityConverter : ITypeConverter<Dto, Entity> { private readonly IEntityRepository _entityRepository; public DtoToEntityConverter (IEntityRepository entityRepository ) { _entityRepository = entityRepository ; } public Entity AutoMapper now targets . 0 ConstructUsing breaking change. DateOnly?>(). MyClass. During mapping this map is used // against an existing destination object and never constructed itself I am using automapper to map from model to dto. I used this approach every time my container cannot reach some of my code like the question you posted. SomeProperty, "RUT-OH!", // This value comes from HttpContext. Call constructUsing() and pass in a DestinationConstructor to customize how AutoMapper should construct the Destination before every map operation If your destination type has a custom constructor but you don’t want to override the entire mapping, use the ConstructUsing expression-based method overload: cfg . 1 and doesn’t work on . This is typically when one type looks nothing like the other, a conversion function already exists, and you would like to go from a “looser” type to a stronger type, such as a source type of string to a destination type of Int32. ForMember(q => q. Extensions. My source object: Using ConstructUsing method. ConstructUsing; I'm trying to set up an AutoMapper mapping against a factory method. When using an ORM such as NHibernate or Entity Framework with AutoMapper’s standard mapper. ForMember() in case a property mismatches. Equivalent settings overwrite each other . Name” from “CustomerName” based on the original flattening. ConstructUsing(source=> new Record(string. ConstructUsing(x => new SetDataValueCommand($"{cfg. AutoMapper v11. Automapper v10 and AutoMapper. The change from Func to Expression may break some existing usages. net core project and it's my first time with that library. – Lucian Bargaoanu. To light them up, you need to add an using for AutoMapper. ObjectId You can configure which constructors are considered for the destination object: I have the following dto: public class SingleForm { // other props left out for brevity public List<Filter> Filters { get; set; } } I then try mapping it with AutoMapper like so:. I was using the same versions. The constructor set the correct values but ConstructUsing overwrite the values with the original ones. GetInstance)); Note that the difference between ConvertUsing and ConstructUsing is that ConvertUsing is invoking the method you provided and exits the conversion procedure while ConstructUsing only instantiates the object and continues execution on the rest of the mapping rules. I'm trying to use AutoMapper to add in a model layer, and I want to make sure the default parameters win – One version of this would be the following, which relies on existign mapping rules (for automapper), and dependency injection using AutoFac for providing the parameters to perform the mapping. namespace Tests {using System; using AutoMapper; using FluentAssertions; using Xunit; public class Repro {private static readonly IMapper Mapper = new Mapper (new MapperConfiguration (x => x. 28. Modified 5 years, 1 month ago. It is using reflection for creating objects. Map statements based on the predicate. public class XProfile : AutoMapper. For example, you can have only one type converter per map and only one resolver per member. Closed Darthruneis opened this issue Jul 5, 2021 · 0 comments AutoMapper locked and limited conversation to collaborators Jul 6, 2021. Load 7 more related questions Show fewer related questions I have a scenario where I want to create an object (Calc) which takes some options as a constructor argument. DependencyInjection library for Automapper - as well as a Profile class which i've just included in this example. It's seems like i have to do something like this: CreateMap<AddFeedbackCommand, SetDataValueCommand>(). CreateMap<NewPatient, Patient>() . Since AutoMapper requires an instance to map to, setting the destination to null seems like it should go outside the mapping. From what I can tell, the second parameter in Mapper. jtorn ekse ixtwz nnatsp rblu vkks ynde btixq sriw rvftsq