I have used automapper for mapping lists in the past, for for some reason it won't work in this case.
public class MyType1 {
public int Id { get; set; }
public string Description { get; set; }
}
public class MyType2 {
public int Id { get; set; }
public string Description { get; set; }
}
public void DoTheMap() {
Mapper.CreateMap<MyType2, MyType1>();
Mapper.AssertConfigurationIsValid();
var theDto1 = new MyType2() { Id = 1, Description = "desc" };
var theDto2 = new MyType2() { Id = 2, Description = "desc2" };
List<MyType2> type2List = new List<MyType2> { theDto1, theDto2 };
List<MyType1> type1List = Mapper.DynamicMap<List<MyType1>>(type2List);
//FAILURE. NO EXCEPTION, BUT ZERO VALUES
List<MyType1> type1List2 =type2List.Select(Mapper.DynamicMap<MyType1>).ToList();
//SUCCESS, WITH LINQ SELECT
}
Change this:
Mapper.DynamicMap<List<MyType1>>(type2List)
To this:
Mapper.Map<List<MyType1>, List<MyType2>>(type2List);
DynamicMap is only if you don't know the type at compile time - for things like anonymous types.
Related
Having an issue with version 6.1.1. In the below, the result of the reverse map still has the Company object populated. Per this post, which shows what I am doing below, except they are ignoring a property, and I'm ignoring a complex object.
What am I missing?
CreateMap<Item, ItemViewModel>(MemberList.Destination)
.ReverseMap()
.ForMember(x => x.Company, x => x.Ignore())
;
With AutoMapper 6.1 you could use ForPath instead ForMember to ignore complex objects.
See How to ignore property with ReverseMap for further information.
I see not what is wrong, but here is a running sample:
namespace AutomapperTest2
{
internal class Program
{
#region Methods
private static void Main(string[] args)
{
// Configure the mappings
Mapper.Initialize(cfg =>
{
cfg.CreateMap<ApplicantEducation, ApplicantEducationVM>();
cfg.CreateMap<Applicant, ApplicantVM>().ReverseMap()
.ForMember(x => x.Education, x => x.Ignore());
});
var config = new MapperConfiguration(cfg => cfg.CreateMissingTypeMaps = true);
var mapper = config.CreateMapper();
Applicant ap = new Applicant
{
Name = "its me",
Education =
new ApplicantEducation
{
SomeInt = 10,
SomeString = "sampleString"
}
};
// Map
ApplicantVM apVm = Mapper.Map<Applicant, ApplicantVM>(ap);
Applicant apBack = Mapper.Map<ApplicantVM, Applicant>(apVm);
}
#endregion
}
/// Your source classes
public class Applicant
{
public ApplicantEducation Education { get; set; }
public string Name { get; set; }
}
public class ApplicantEducation
{
public int SomeInt { get; set; }
public string SomeString { get; set; }
}
// Your VM classes
public class ApplicantVM
{
public string Description { get; set; }
public ApplicantEducationVM Education { get; set; }
public string Name { get; set; }
}
public class ApplicantEducationVM
{
public int SomeInt { get; set; }
public string SomeString { get; set; }
}
}
}
I would like to use automapper to map nested enumerable properties in existing enumerable nested properties.
Here is the problem simplify, i have Entities objects, they implement IEntity Interface, and Models objects, they implment IModel interfaces.
I would like to update easily and in a smart way IEntity object with IModel object
Example :
public class PersonEntity : IEntity
{
public int Id { get; set; }
public string Name { get; set }
public IEnumerable<AddressEntity> Addresses { get; set }
}
public class AddressEntity : IEntity
{
public int Id { get; set; }
public string Street { get; set }
public string entityField { get; set }
}
public class PersonModel : IModel
{
public int Id { get; set; }
public string Name { get; set }
public IEnumerable<AddressModel> Addresses { get; set }
}
public class AddressModel : IModel
{
public int Id { get; set; }
public string Street { get; set }
}
If i have these two instance og PersonEntity and AddressEntity :
var personModel = new PersonModel()
{
Id = 1,
Name = "Name",
Addresses = new List<AddressModel>() {
new AdressModel() { Id = 1, Street = "Street B" }
}
var person = new PersonEntity()
{
Id = 1,
Name = "Name",
Addresses = new List<AddressEntity>() {
new AdressEntity() { Id = 1, Street = "StreetA", EntityField ="entityValue" }
}
How can i map by Id, the Addresses element, to only erase the StreetA value by StreetB value, and keep existing entityField value intact ?
Thank you for help !
i want register custo generic type like default generic type that register in autoMaper (like List, Array) in AutoMappper.
i have one generic type in project this Code :
class PagedResult<T>
{
public List<T> PageOfResults { get; set; }
public int TotalItems { get; set; }
}
and Dto Class is:
class StudentDto
{
public int ID { get; set; }
public string Name { get; set; }
}
and VM Model is :
class StudentVM
{
public int ID { get; set; }
public string Name { get; set; }
}
and service class:
class MyServie
{
public PagedResult<StudentDto> Swap()
{
var test2 = new PagedResult<StudentDto>();
test2.PageOfResults = new List<StudentDto>();
test2.PageOfResults.Add(new StudentDto() { ID = 10, Name = "Ten" });
test2.TotalItems = 10;
return test2;
}
}
i want use from AutoMapper Object Manager for register PagedResult<> in automapper but i can not do this
var allMappers = MapperRegistry.AllMappers();
MapperRegistry.AllMappers = () => new IObjectMapper[]{
new IdentifiableMapper(),
}.Concat(allMappers);
var service = new MyServie();
PagedResult<StudentDto> pageableStudentDto = service.Swap();
Mapper.CreateMap<StudentDto, StudentVM>();;
PagedResult<StudentVM> vm = Mapper.Map<PagedResult<StudentDto>, PagedResult<StudentVM>>(pageableStudentDto);
and implement of
public class PageOfMapper : IObjectMapper
{
public bool IsMatch(ResolutionContext context)
{
return typeof(PagedResult<>).IsAssignableFrom(context.SourceType.GetGenericTypeDefinition()) &&
typeof(PagedResult<>).IsAssignableFrom(context.DestinationType.GetGenericTypeDefinition());
//return true;
}
public object Map(ResolutionContext context, IMappingEngineRunner mapper)
{
// please help me in this code for map ******************
return null;
}
}
Hello. I have a list that looks like this one:
public class PagedList<T> : List<T>
{
public PagedList(IEnumerable<T> collection) : base(collection)
{ }
public int TotalItems { get; set; }
public int CurrentPage { get; set; }
public int PageSize { get; set; }
//some other properties
}
and used in repository for paging
public PagedList<TEntity> GetPaged(int page)
{
var pagedEntities = some_query;
return pagedEntities.AsPagedList(totalResults, page, pageSize);
}
The same PagedList is also used in asp mvc view models for paging.
Is it possible to map this collections using Automapper with all the properties TotalItems/CurrentPage/... ?
PagedList<DbItem> dbItems = _repository.GetPages(page);
var viewItems = new PagedList<SomeItemView>();
Mapper.Map(dbItems , viewItems);
Tahnk You !
This worked for me. Are you looking for something more generic?
public class DbItem
{
public int Id { get; set; }
public string Name { get; set; }
}
public class ViewItem
{
public int Id { get; set; }
public string Name { get; set; }
}
public class PagedList<T>: List<T>
{
public int TotalItems { get; set; }
public int CurrentPage { get; set; }
public int PageSize { get; set; }
}
class Program
{
static void Main(string[] args)
{
MapItems();
}
public static void MapItems()
{
Mapper.CreateMap<DbItem, ViewItem>();
Mapper.CreateMap<PagedList<DbItem>, PagedList<ViewItem>>()
.AfterMap((s, d) => Mapper.Map<List<DbItem>, List<ViewItem>>(s, d));
var dbList = new PagedList<DbItem>
{
new DbItem {Id = 1, Name = "a"},
new DbItem {Id = 2, Name = "b"}
};
dbList.TotalItems = 2;
dbList.CurrentPage = 1;
dbList.PageSize = 10;
var viewList = Mapper.Map<PagedList<DbItem>, PagedList<ViewItem>>(dbList);
Console.WriteLine(viewList.TotalItems);
Console.WriteLine(viewList.CurrentPage);
Console.WriteLine(viewList.PageSize);
Console.WriteLine(viewList[0].Id + " " + viewList[0].Name);
Console.WriteLine(viewList[1].Id + " " + viewList[1].Name);
Console.ReadLine();
}
}
What you need is a custom type converter
public class PagedListConverter<TIn, TOut> : ITypeConverter<IPagedList<TIn>, IPagedList<TOut>>
{
public IPagedList<TOut> Convert(AutoMapper.ResolutionContext context)
{
var source = (IPagedList<TIn>)context.SourceValue;
var mapped = Mapper.Map<IList<TOut>>(source);
return new StaticPagedList<TOut>(mapped, source.GetMetaData());
}
}
Usage:
Mapper.CreateMap<IPagedList<Company>, IPagedList<CompanyViewModel>>().ConvertUsing<PagedListConverter<Company, CompanyViewModel>>();
For those who have faced the similar problem recently, and as an update to NoPyGod's answer, you can achieve the general mapping using ITypeConverter. According to the official documentation:
AutoMapper also supports open generic type converters with any number of generic arguments:
var configuration = new MapperConfiguration(cfg =>
cfg.CreateMap(typeof(Source<>), typeof(Destination<>)).ConvertUsing(typeof(Converter<,>)));
The closed type from Source will be the first generic argument, and the closed type of Destination will be the second argument to close Converter<,>.
So the custom type converter would be:
private class Converter<TSource, TDestination>
: ITypeConverter<PagedList<TSource>, PagedList<TDestination>>
{
public PagedList<TDestination> Convert(
PagedList<TSource> source,
PagedList<TDestination> destination,
ResolutionContext context) =>
new PagedList<TDestination>(
context.Mapper.Map<List<TSource>, List<TDestination>>(source));
/* Additional settings comes here. */
}
And then register it:
this.CreateMap(typeof(PagedList<>), typeof(PagedList<>)).ConvertUsing(typeof(Converter<,>));
After working with AutoMapper I came across ValueInjecter on this site. I am trying it out but I am stuck on what is probably a very simple scenario.
But before I dig into the code sample, does anyone know if ValueInjecter works in a Medium-Trust web environment? (Like Godaddy?)
Ok, onto the code! I have the following models:
public class NameComponent
{
public string First { get; set; }
public string Last { get; set; }
public string MiddleInitial { get; set; }
}
public class Person
{
public NameComponent Name { get; set; }
}
that I want to map to the following DTO:
public class PersonDTO : BaseDTO
{
private string _firstName;
public string FirstName
{
get { return _firstName; }
set { NotifyPropertyChanged(() => FirstName, ref _firstName, value); }
}
private string _middleInitial;
public string MiddleInitial
{
get { return _middleInitial; }
set { NotifyPropertyChanged(() => MiddleInitial, ref _middleInitial, value); }
}
private string _lastName;
public string LastName
{
get { return _lastName; }
set { NotifyPropertyChanged(() => LastName, ref _lastName, value); }
}
}
So when I want to Map from Model to DTO I need a Model.Name.First -> DTO.FirstName
and when going from DTO to Model I need FirstName -> Name.First. From my understanding this is not a simple Flatten/UnFlatten, because the words also reverse themselves, ie: FirstName <--> Name.First. So First and Last names could use the same kind of rule, but what about MiddleInitial? Model.Name.MiddleInitial -> DTO.MiddleInitial.
I see there are some plugins, but none of them seem to do what I would want. Has anyone else come across this scenario?
the basic idea is that I match the Name with the FirstName, I take this as a pivot point, and in the method that usually sets the value to just one (FirstName) property I set it to 3 properties - that's for the FromNameComp
in the ToNameComp i match the same properties but I take the value from 3 and create one and set it
public class SimpleTest
{
[Test]
public void Testit()
{
var p = new Person { Name = new NameComponent { First = "first", Last = "last", MiddleInitial = "midd" } };
var dto = new PersonDTO();
dto.InjectFrom<FromNameComp>(p);
Assert.AreEqual(p.Name.First, dto.FirstName);
Assert.AreEqual(p.Name.Last, dto.LastName);
Assert.AreEqual(p.Name.MiddleInitial, dto.MiddleInitial);
var pp = new Person();
pp.InjectFrom<ToNameComponent>(dto);
Assert.AreEqual(dto.LastName, pp.Name.Last);
Assert.AreEqual(dto.FirstName, pp.Name.First);
Assert.AreEqual(dto.MiddleInitial, pp.Name.MiddleInitial);
}
public class FromNameComp : ConventionInjection
{
protected override bool Match(ConventionInfo c)
{
return c.SourceProp.Name == "Name" && c.SourceProp.Type == typeof(NameComponent)
&& c.TargetProp.Name == "FirstName"
&& c.SourceProp.Value != null;
}
protected override object SetValue(ConventionInfo c)
{
dynamic d = c.Target.Value;
var nc = (NameComponent)c.SourceProp.Value;
//d.FirstName = nc.First; return nc.First does this
d.LastName = nc.Last;
d.MiddleInitial = nc.MiddleInitial;
return nc.First;
}
}
public class ToNameComponent : ConventionInjection
{
protected override bool Match(ConventionInfo c)
{
return c.TargetProp.Name == "Name" && c.TargetProp.Type == typeof(NameComponent)
&& c.SourceProp.Name == "FirstName";
}
protected override object SetValue(ConventionInfo c)
{
dynamic d = c.Source.Value;
var nc = new NameComponent { First = d.FirstName, Last = d.LastName, MiddleInitial = d.MiddleInitial };
return nc;
}
}
public class NameComponent
{
public string First { get; set; }
public string Last { get; set; }
public string MiddleInitial { get; set; }
}
public class Person
{
public NameComponent Name { get; set; }
}
public class PersonDTO
{
public string FirstName { get; set; }
public string MiddleInitial { get; set; }
public string LastName { get; set; }
}
}
But before I dig into the code sample,
does anyone know if ValueInjecter
works in a Medium-Trust web
environment? (Like Godaddy?)
it doesn't use reflection.emit so it should work