[英]How do I use AutoMapper to map multiple subclasses into one class?
假设我有三个类是基类的子类:
public class BaseClass
{
public string BaseName { get; set; }
}
public class Subclass1 : BaseClass
{
public string SubName1 { get; set; }
}
public class Subclass2 : BaseClass
{
public string SubName2 { get; set; }
}
public class Subclass3 : BaseClass
{
public string SubName3 { get; set; }
}
我想将这些映射到ViewModel类,如下所示:
public class ViewModel
{
public string BaseName { get; set; }
public string SubName1 { get; set; }
public string SubName2 { get; set; }
public string SubName3 { get; set; }
}
ViewModel
简单地组合了所有子类的属性并将其展平。 我尝试像这样配置映射:
AutoMapper.CreateMap<BaseClass, ViewModel>();
然后我尝试从我的数据库中抓取数据,如下所示:
var items = Repo.GetAll<BaseClass>();
AutoMapper.Map(items, new List<ViewModel>());
但是,最终发生的事情是只在ViewModel
填充BaseName
属性。 我如何配置AutoMapper以便它也将映射子类中的属性?
AutoMapper中似乎存在一个错误或限制,您需要相应的TSource和TDestination层次结构。 鉴于:
public class BaseClass {
public string BaseName { get; set; }
}
public class Subclass1 : BaseClass {
public string SubName1 { get; set; }
}
您需要以下视图模型:
public class ViewModel {
public string BaseName { get; set; }
}
public class ViewModel1 : ViewModel {
public string SubName1 { get; set; }
}
以下代码然后工作:
Mapper.CreateMap<BaseClass, ViewModel>()
.Include<Subclass1, ViewModel1>();
Mapper.CreateMap<Subclass1, ViewModel1>();
var items = new List<BaseClass> {new Subclass1 {BaseName = "Base", SubName1 = "Sub1"}};
var viewModels = Mapper.Map(items, new List<ViewModel>());
尝试这个:
AutoMapper.CreateMap<BaseClass, ViewModel>()
.Include<Subclass1, ViewModel>()
.Include<Subclass2, ViewModel>()
.Include<Subclass3, ViewModel>();
AutoMapper.CreateMap<Subclass1, ViewModel>();
AutoMapper.CreateMap<Subclass2, ViewModel>();
AutoMapper.CreateMap<Subclass3, ViewModel>();
var items = Repo.GetAll<BaseClass>();
AutoMapper.Map(items, new List<ViewModel>());
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