AutoMapper 如何在 ForMember 方法中将一个 class 映射到另一个 class

Question

所以我的项目得到了这个 class 结构：

public class SomeType {
    public int Id {get; set;}
    public List<Customer> Customers {get; set;}
}

public class Customer {
     public int Id {get; set;}
     public string FirstName {get; set;}
}

public class CustomerDto {
    public int Id {get; set;}
    public string FirstName {get; set;}
}

public class SomeTypeDto {
    public int Id {get; set;}
    public List<object> SomeValues {get; set;}
}

在我的项目中的某个时刻，我这样称呼它：

var result = _mapper.Map<SomeTypeDto>(someType);

在使用 AutoMapper 将 SomeType class 映射到 SomeTypeDto 后，是否可以将 Customer 类型的列表转换为 CustomerDto 类型的列表？我记得之前有一种方法在创建类型映射时在 MapFrom 方法中调用静态 Mapper.Map<>() 方法，但它似乎不适用于较新的版本。

Answer 1

您的 MapperConfiguration /（映射）Profile 应如下所示：

MapperConfiguration

var config = new MapperConfiguration(cfg =>
{
    cfg.CreateMap<Customer, CustomerDto>();

    cfg.CreateMap<SomeType, SomeTypeDto>()
        .ForMember(dest => dest.SomeValues, opt => opt.MapFrom(src => src.Customers));
});

MappingProfile

public class SomeTypeProfile : Profile
{
    public SomeTypeProfile()
    {
        CreateMap<Customer, CustomerDto>();

        CreateMap<SomeType, SomeTypeDto>()
            .ForMember(dest => dest.SomeValues, opt => opt.MapFrom(src => src.Customers));
    }
}

var config = new MapperConfiguration(cfg =>
{
    cfg.CreateMap<Customer, CustomerDto>();

    cfg.CreateMap<SomeType, SomeTypeDto>()
        .ForMember(dest => dest.SomeValues, opt => opt.MapFrom(src => src.Customers));
});
        
IMapper mapper = config.CreateMapper();
        
var someType = new SomeType 
{ 
    Id = 1, 
    Customers = new List<Customer> 
    { 
        new Customer { Id = 1, FirstName = "Alfred" } ,
        new Customer { Id = 2, FirstName = "Max" } 
    } 
};

var someTypeDto = mapper.Map<SomeType, SomeTypeDto>(someType);

Sample Demo on .Net Fiddle

AutoMapper 如何在 ForMember 方法中将一个 class 映射到另一个 class

AutoMapper How to map one class to another class in a ForMember method

c#

automapper