自引用列表映射

Question

我有一个类别和孩子的自引用列表。每个类别都有一个子列表，这些子列表也是类别，但自动映射器仅适用于模型的第一级。

CreateMap<Category, CategoryForReturnDto> ()
    .ForMember (dest => dest.ItemsCount, opt => {
        int number = 0;
        opt.ResolveUsing (src => {
            return RecursiveItemsCount (src, number);
        });
    })
    .ForMember (dest => dest.Children, opt => { });

public class Category 
{
    public int Id { get; set; }
    public string Name { get; set; }
    public int? ParentId { get; set; }
    public virtual Category Parent { get; set; }
    public virtual ICollection<Category> Children { get; set; }
    public ICollection<Item> Items { get; set; }
}

public class CategoryForReturnDto
{
     public string Name { get; set; }
     public int Id { get; set; }
     public int ItemsCount { get; set; }
     public ICollection<Category> Children { get; set; }
     public int ParentId { get; set; }
}

Answer 1

修复是内部自动化配置文件

        CreateMap<Category, CategoryForReturnDto> ()
            .ForMember (dest => dest.ItemsCount, opt => {
                int number = 0;
                opt.ResolveUsing (src => {
                    return RecursiveItemsCount (src, number);
                });
            });

在dto里面

public class CategoryForReturnDto
{
     public string Name { get; set; }
     public int Id { get; set; }
     public int ItemsCount { get; set; }
     public ICollection<CategoryForReturnDto> Children { get; set; }
     public int? ParentId { get; set; }
}