如何在 Automapper 中映射数组对象的值？

Question

我有以下结构，我想将

Parent.StockNumber

分配给

Supplier.StockNumber

。由于

Supplier

是数组，我不确定如何在 Automapper 中使用

.ForEach

。

代码：

public class Parent
{
    public int ParentId { get; set; }
    public long StockNumber { get; set; }
    public DateTimeOffset? EarliestPaymentDate { get; set; }
    public List<Supplier> Suppliers { get; set; }
}

public class Supplier
{
    public int SupplierId { get; set; }
    public long StockNumber { get; set; }
    public int ParentId { get; set; }
}

public class ParentDto
{
    public int ParentId { get; set; }
    public long StockNumber { get; set; }
    public DateTimeOffset? EarliestPaymentDate { get; set; }
    public List<Supplier> Suppliers { get; set; }
}

public class SupplierDto
{
    public int SupplierId { get; set; }
    public long StockNumber { get; set; }
    public int ParentId { get; set; }
}

映射器：

CreateMap<ParentDto, Parent>()
    // Single value assignment
    .ForMember(dest => dest.EarliestPaymentDate, opt => opt.MapFrom(src => src.EarliestPaymentDateTime))
    // .Suppliers is an array and not sure how to do mapping here.
    .ForMember(dest => dest.Suppliers, opt => opt.MapFrom(src => src.StockNumber))
    ;

我试过跟随，但这绝对是错误的。

.ForMember(dest => dest.Suppliers.ForEach(x => x.StockNumber), opt => opt.MapFrom(src => src.StockNumber))

Answer 1

我通过使用

AfterMap

找到了解决方案。

代码：

public MappingProfile()
{
    CreateMap<ParentDto, Parent>()
        .ForMember(dest => dest.EarliestPaymentDate, opt => opt.MapFrom(src => src.EarliestPaymentDateTime))
        .AfterMap(HandleArrayProperties);

}

private static void HandleArrayProperties(ParentDto parentDto, Parent parent)
{
    parent.Suppliers.ForEach(x => x.StockNumber = Convert.ToInt64(parentDto.StockNumber));
}