Automapper constructusing. In doing so ResolveUsing was consolidated with MapFrom.

Automapper constructusing ConstructUsing(myConverter); This piece of code does not build with AutoMapper 8, because I have to use expressions. ConstructUsing(s => new RestrictedName(s. HasValue ? DateOnly. It should be singleton because constructing it is quite heavy. Initialize or generating an IMapper object? You are receiving this because you authored the thread. CreateMap<DataFullXXX, XXX> () you could If you need to convert object types from one to another, writing it by hand could be a pain, check out AutoMapper. ForAllMembers(opt => opt. MapFrom(q => q. We use AutoMapper to map from Entities (NHibernate) to DTO's and bac You can absolutely do exactly what you want using a custom ITypeConverter<TSource, TDestination> implementation. AutoMapper can map to destination constructors based on source members: If the destination constructor parameter names don’t match, you can modify them at config time: This works for Since you have mappings defined for these entities, you could call Mapper. It’s not going to do it. removing the EventType and creating subclasses ) Unfortunately I inherited this code and just need to resolve bugs without spending to much time. ConstructUsing(sourceItem => { var destItem = new DestEntity 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. MapFrom(s=>s. public class DtoToEntityConverter : ITypeConverter<Dto, Entity> { private readonly IEntityRepository _entityRepository; public DtoToEntityConverter (IEntityRepository entityRepository ) { _entityRepository = entityRepository ; } public Entity AutoMapper allows now (I am not sure, since when) to map properties with private setters. Automapper using constructor with default parameters. Options. ResolutionContext>)'. ConstructServicesUsing(childContainer. CreateMap < Source, SourceDto > ()); If the destination Is there a way to tell AutoMapper to ignore all of the properties except the ones which are mapped explicitly? I have external DTO classes which are likely to change from the outside and I want to avoid specifying each property to be ignored explicitly, since adding new properties will break the functionality (cause exceptions) when trying to map them into my own 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. first, src. Mapping object with AutoMapper. Existing ConstructUsing usages The change from Func to Expression may break some existing usages. I have problems using ConstructUsing. I can configure all i need, but stuck on how to combine open generic and custom construct. Categories, option => option. Value) : null); AssertConfigurationIsValid will work without any problems, but if you use the mapping, you will get the following error: Conditional Mapping . then you can use ConstructUsing like this. Project (). MapFrom(s => s. Using a ValueConverter in combination with ForMember is working Today I upgraded a fully functioning application using AutoMapper v1. ConstructUsing(source => new PersonViewModel(_kernel. But as soon the source value is null, the entire destination property (dest. This is because AutoMapper is finding this CableIDDTO constructor: public CableIDDTO(string panelID1, string panelID2, int sequenceNo) and calling it, setting sequenceNo. That going to be good as it will hide this away from consumers of The ConstructUsing expression-based method will be used for both in-memory mapping and LINQ projections. Here is an example that reproduces this. Automapper - Mapping from source child object to destination is including parent values. Did adding . The text was updated successfully, but these errors were encountered: Configure the IMyInterface mapping to construct your ImplementedClass, . Related. (in AutoMapper. 0). The 5. To The ConstructUsing expression-based method will be used for both in-memory mapping and LINQ projections. Map<Source, Destination>(new Source { Value = 15 }, opt => opt. Improve this answer. 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 Queryable Extensions . I cannot get the simplest case on the AutoMapper website to work nor can I get the more advanced IMemberValueResolver case to 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. CreateMap<Source, Dest>() . 6. 0 ConstructUsing breaking change. Automapper create map method. The destination class can't be created without calling a non AutoMapper 8. 2 and the AutoMapper. We used AutoMapper since years now and were very happy with it. Jimmy said: However, you CAN use ConstructUsing to build out the initial destination object. 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>(). ConstructUsing(Mapper. To convert to string is easy, however to convert the string back to type I wrote a ValueConverter. . Some time ago we updated it from a very old version (2. To map Objects that need Constructor Parameters using Automapper you need to use the ConstructUsing Method while Creating the Map. Ignore()) work with the first suggestion? It is used to configure AutoMapper to use certain constructor to instantiate a class. 0, where dynamic mapping was removed, you should stick with 8. QueryableExtensions namespace): var dst = src. ConstructServicesUsing(t => new Dest(5)); // Tell AutoMapper to use already defined configuration to construct Dest class cfg. When using an ORM such as NHibernate or Entity Framework with AutoMapper’s standard mapper. You have to think what it is a store of - in this case KeyValuePairs. ---> System. DataYYY)) After upgrading to AutoMapper 8 my custom converters are ignored. If you project references AutoMapper be carefull of braking changes between version, when using I am using ASP. CreateMap<DataFullXXX, XXX>() you could do . NET Core but when I inject service in the constructor it does not work. 3. Attributes, ResponseDTO. How can I tell automapper to change behaviour in the SubType mapping based on the Event. Follow edited Oct 21, 2013 at 10:51. So my question is How can I map to a class, with read only properties, using Automapper; without having to use . Why don't the properties from my subclasses 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. 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. I think that will have to be done outside the mapping. See the Sample Console Applications AutoMapper’s ForCtorParam method facilitates mapping class properties to record constructor parameters. Map<CA, CB>) ; CreateMap<A, B>(); } } Share. Mapper. Fesslersoft. ForMember(m=>m. AutoMapper requiring mapping members and constructor. Entities. 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". Load 7 more related questions Show fewer related questions Sorted by: Reset to default Know someone who can answer? Share a link to this question via email, Twitter, or Facebook. Automapper Map Members in the nested class. Everything was fine but we had one Problem. To instruct AutoMapper to recognize members with other visibilities, override the default filters ShouldMapField and/or ShouldMapProperty : To map these I use ConstructUsing, a solution from another stack overflow post. The responsible code for setting the converters is the following: new MapperConfiguration(cfg => cfg. Now I'm trying to do what @jimmy-bogard said in his answer, but unfortunately still with no success. Microsoft. ForMember(q => q. How can I map a List&lt;string&gt; to List&lt;Class&gt;? 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 As I now need to manually map every property, in the correct order, in the . Or a custom AfterMap, that's also inherited. AutomapperConstructorTest { class Program { static void Main(string[] args) { 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. For example: public class UserProfile : Profile { private readonly IUserManager _userManager; public UserProfile(IUserManager userManager) { _userManager = userManager; CreateMap<User, UserViewModel>() It is used to configure AutoMapper to use certain constructor to instantiate a class. This works great in the application, but in the test the configuration is not valid for AutoMapper. However, if this logic pertains only to the mapping operation, it would clutter our Queryable Extensions . I believe you could do this in earlier versions of Automapper. Here is what I have in my AutoMapper profile: CreateMap<bool?, string>() . ConstructUsingServiceLocator(); }); The ConstructUsing expression-based method will be used for both in-memory mapping and LINQ projections. 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; } } By default, AutoMapper only recognizes public members. In doing so ResolveUsing was consolidated with MapFrom. ; In the Convert method of your customer type converter, you can recover your parameter(s) from the Queryable Extensions . Most users don’t need How to use Mapper. Here's my code: void Main() { var mockMapper = new MapperConfiguration(c => { c. AfterMap(System. In my model I want to use a string where in my dto I use an Enum. It is using reflection for creating objects. Hello! I need to map simple source type to proxied generic. GetInstance)); 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. CreateMap<Source, Destination>() . I apply this globally to my profile, and it works for true and false but not for null. ConstructUsing()` and manually map every property into the constructor? I am using automapper to map from model to dto. One option I though of: I have a scenario where I want to create an object (Calc) which takes some options as a constructor argument. 2) Say mapper take paramether from sorce - . Sample Console Application C# using System; using AutoMapper; namespace de. This can be used in situations like the following where we are trying to map from an int to an unsigned int. But the username in the request is not singleton-scope. Map<TypeB>(instanceOfA); // instanceOfB. For example, we might want to turn this source structure: You need to tell AutoMapper that you don't intend to have it construct the destination type by calling CreateMap<TSource, TDest>(). In your case you are returning a Child2 object with the Id value set to 2 (as returned by the ctx. CreateMap<UrlPickerState, Link>() . ConstructUsing(dest => new Patient(dest. Namely: ConstructUsing using lambda statements, method groups, or So options is: 1) Use constructor without parameters. To light them up, you need to add an using for AutoMapper. Child1) line). 28. Map < ContestEditableViewModel, Model. public AutoMapper() { CreateMap<RequestDTO. Automapper map from one object to nested objects. ForMember(q => q, option => option. I am not seeing my values mapped on the concrete 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 Visit the blog Subject: Re: [AutoMapper] CreateMap. FromDateTime(x. MissingMethodException: Method not found: 'AutoMapper. While it is a nested child, I am using ForPath instead ForMember. AutoMapper using the wrong constructor. Automapper ConstructUsing not working as expected. NewWindow)); var Is it possible with AutoMapper? I have tried this and I was not surprised when it failed: config. Property1 will be "Some 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 and where the information the designated. Parent. This method requires a parameter. For sample: . Attributes And then use the ConstructUsing option in the Source, Destination mapping to do the translation from the Source to the ActualDestination: AutoMapper. Action`3<!0,!1,AutoMapper. ConstructUsing(source => new PersonViewModel(source. 10. Name)); is it possible for me to add the ability to use the method AddEmailAddresses with AutoMapper? I've tried CreateMap<NewPatient, Patient>() . ConstructUsing and telling AutoMapper to use the no-args constructor: 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. second, ctxt. As per the method documentation: // Summary: // Disable constructor validation. Contest. var dest = Mapper. 1 to now use AutoMapper v2. Namely: ConstructUsing using lambda statements, method groups, or AutoMapper 9. CreateProjection < When you make mapper configuration are you using Mapper. Here is an AutoMapper 8. ConvertUsing<NullableBoolToLabel>(); And here is the converter class: DateOnly?>(). The second test AutoMapper_ConstructUsing_Test_IsValid will fail, while the other two will complete successfully. 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 I have an AutoMapper converter that takes a Nullable<bool>/bool? and returns a string. During mapping this map is used // against an existing destination object and never constructed itself CreateMap<NewPatient, Patient>() . If your ORM exposes IQueryable s, you can use AutoMapper’s I am using automapper in my asp. The ConstructUsing expression-based method will be used for both in-memory mapping and LINQ Call constructUsing () and pass in a DestinationConstructor to customize how AutoMapper should construct the Destination before every map operation against that To map Objects that need Constructor Parameters using Automapper you need to use the ConstructUsing Method while Creating the Map. CreateMap<TypeA, TypeB>(). AutoMapper allows you to add conditions to properties that must be met before that property will be mapped. Mapping lists of objects with parameters. net core project and it's my first time with that library. When invoking Map, you can configure the conversion context with your custom parameter(s) using the second callback argument. You cannot have separate configuration for in-memory vs. TypeA instanceOfA = new TypeA() { Property1 = "Some string" }; _id = 3; Mapper. If you’re not interested in upgrading to 9. Reload to refresh your session. DisableCtorValidation(). service) 3) Pass paramether directly - same like 2, but u can get it from IoC container if u have it, for example . The following example shows how to connect an IMappingAction accessing the current HttpContext to a Profile after map action, leveraging dependency injection: It looks like you're using an older version of AutoMapper. Value converters are a cross between Type Converters and Value Resolvers. Net Framework ForAllMaps, ForAllPropertyMaps, Advanced and other “missing” APIs Some APIs were hidden for normal usage. Map on it. Base members don't get mapped. ConstructUsing(x => x. ConstructUsing(m => . LINQ projections. After it constructs the object it continues mapping as usual. cfg. AutoMapper now targets . See the Sample Console Applications below. ConstructUsing(cr => ) In my case, there is no public Customer-constructor. This means that the Parent. Is there a way to do the mapping using Automapper. 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. ConstructUsing; Unfortunately this approach doesnt seem to work as AutoMapper still requires a mapping between Product and ProductVariant and will throw an exception if not provided. DestinationValue is null), but maybe I'm completely missing a AutoMapper 8. Ignore()) work with the first suggestion? I need to use a service layer in the AutoMapper profile class in ASP. ConstructUsing((src, ctxt) => new Dest(src. I've got a public method exposed on this class that is used to set values to the property. 0 Issue with AutoMapper having Unmapped properties. OpenInNewWindow,map=>map. Categories)); ConstructUsing() is used to generate and populate the 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; . I will review this in detail later and post my results. 1 and doesn’t work on . None) . AutoMapper’s Solutions: ForCtorParam and ConstructUsing AutoMapper’s ForCtorParam method facilitates mapping class properties to record constructor parameters. ConstructUsing((TypeA a) => new TypeB(_id)); TypeB instanceOfB = Mapper. Mapper. Any suggestions? [TestFixture] public class SandBox { public class MySource { public string Name { get; set; } public int Count { get; set; } } public class MyDestination { public string Name { get; set; } public int This generates Automapper's interface proxy class types but I think it should create ImplementedClass 's instance. Sometimes, you need to take complete control over the conversion of one type to another. You switched accounts on another tab or window. 0 the API of AutoMapper has been changed. Map with ConstructUsing and AutoMapper? 1. Name)) I need to map to a protected property on a class using Automapper. Value). Internal and call the Internal extension method on the configuration object. ConstructUsing() method. Name)); which works with this code. But i don't know how? Re After I configure one simple mapping for AutoMapper like: Mapper. YYY, opt => opt. ConstructUsingServiceLocator(); }); Custom Type Converters . TargetInvocationException: Exception has been thrown by the target of an invocation. var model = AutoMapper. Namely: ConstructUsing using lambda statements, method groups, or When ProjA updateted its AutoMapper version ( from 9 to 10 for us ), without also updating the matched AutoMapper, to the same versionas the nuget coming from ProjB, ProjB was unable to operate, since the fetched mapper v10 had breaking changes with the v9 dll. If you don't want to modifiy DestEntity class by adding a new constructor you can use ConstructUsing method like below: cfg. You signed in with another tab or window. For example here's a source and destination class. CreateMapper(); } public class 1. You will most likely have to find a different solution rather than using AutoMapper. Reflection. There's two solutions for this: 1) Use Automapper statically The problem is that AutoMapper configuration is usually singleton. Custom Type Converters . AutoMapper gets around this though by Without extra configuration, AutoMapper requires a flattened destination to match the source type’s naming structure. Hot Network Questions Why Gaussian Process Regression (GPR) is non-parametric? Here is my problem, in Condition I want to get to the name of the current property being evaluated. Net Standard 2. I would instead do something like: AutoMapper. 2. 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. Many times, this custom value resolution logic is domain logic that can go straight on our domain. Automapper - Inheritance mapper not working with type converter. My source object: Using ConstructUsing method. If your ORM exposes IQueryable s, you can use AutoMapper’s AutoMapper no longer creates maps automatically by default CreateMissingTypeMaps was deprecated and its default value changed to false. Map<ActualDestination>(s)); The main part here is the AutoMapper configuration where I am trying to extract reference to the produced DstParent from mapping context. CreateMap<SourceEntity, DestEntity>(MemberList. Items["Id"])); 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 This instruct AutoMapper to check for the option ConstructServicesUsing method that can be provided during the mapping instruction. I'm using AutoMapper to map objects in domain and API resources. You signed out in another tab or window. 0. 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. Automapper: Missing type map configuration or unsupported mapping. As of version 8. Your Answer Reminder: Answers generated by artificial intelligence According to the AutoMapper Documentation, I should be able to create and use an instance of a Custom Type Converter using this:. Profile @alsami thank u for your response but I think that I have found where's the problem, the Thumbnail property is part of CreateDeviceApp. IMappingExpression`2<!0,!1> AutoMapper. For cfg. ForMember(d => d. Extensions. 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). Second, when you are using AutoMapper to map between classes, you must specify every parameters. Automapper is used for mapping between those. CreateMap<OpenName, RestrictedName>() . Since AutoMapper requires an instance to map to, setting the destination to null seems like it should go outside the mapping. It can map to private setters, but will skip internal/private methods and properties if the entire property is private/internal. IMappingExpression`2. 2) I'm trying to map a nullable boolean to a destinations object property (dest. 1 and I am coming across some issues that I never encountered using the previous version. AddProfile<MapperProf>(); }) . The data flow is as follows: Model->DomainModel->ViewModel. DependencyInjection library for Automapper - as well as a Profile class which i've just included in this example. To construct proxy i need to know requested destination type. To map lists of objects I want the mappings to set the context themselves. ConstructUsing((Source s) => AutoMapper. Get<ISomeDependency>) Dependency Injection . 5 Automapper Aftermap "method not found" exception. IsEnabled. Id value will be saved in With Automapper (6. ConstructUsing with profile + AssertConfigurationIsValid . Which kinda defeats the point of using Automapper. Take a look at the corresponding pull request for further information. I expect that the Destination will be constructed using the ConstructUsing and then the concrete mappings will happen. 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: ConstructUsing() is used to create the destination object, where the value should be stored in. CreateMap(mySource, myTarget). It seems to me it is not working. I used this approach every time my container cannot reach some of my code like the question you posted. Map<Child1, Child2>(src. 1. 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. Thanks for your help – Value Converters . Load 7 more related questions Show fewer related questions Sorted by: Reset to default Know someone who can answer? Share a link . 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): System. Part of the data profile class: You can use one of the ConstructUsing overloads to tell AutoMapper which constructor should it use. You can fix this by calling . 0. You can’t inject dependencies into Profile classes, but you can do it in IMappingAction implementations. 1. answered Oct 18, 2013 at 23:11 The problem you are having is because AutoMapper is struggling to map the contents of the Dictionary. x version includes a context object you can use just like you're trying to do. Contest > (viewModel AutoMapper with ConstructUsing to map child properties not valid in test, but works in production. If your ORM exposes IQueryable s, you can use AutoMapper’s 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. However, after the object has been created, the default mapping will still be applied. I'm not exactly sure how or why it's doing that--i'll continue to dig. 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. Net Core 2. Product)) . Initialize(cfg => { // Adding "Construct" configuration cfg. There's a good getting started on the project's wiki. EventType? PS> I know this is bad design and it really should be resolved by refactoring the whole thing ( eg. If you were relying on this, your app will no longer work by default. It happens I have a serialized version of Calc, its properties and the options properties as another single object. var descriptions = To migrate, replace all usages of ConstructProjectionUsing with ConstructUsing. This doesn't work (the (DstParent)resolutionContext. CreateMap<ProductWithCategories, ProductViewModel>() . Additionally, ConstructUsing provides advanced control over the construction of the 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 . I'm new with AutoMapper and have problems with mapping. ear fwcsjf weibqu fjk liqhi epa gisemq twf dvgfge nmfyd