C# 自动映射和类层次结构
鉴于以下来源:C# 自动映射和类层次结构,c#,automapper,derived,C#,Automapper,Derived,鉴于以下来源: public class SourceBase { public string TheString { get; set; } } public class SourceDerived : SourceBase { } 及目的地: public class DestBase { public string MyString { get; set; } } public class DestDerived : DestBase { } 这个映射: CreateMap<
public class SourceBase { public string TheString { get; set; } }
public class SourceDerived : SourceBase { }
及目的地:
public class DestBase { public string MyString { get; set; } }
public class DestDerived : DestBase { }
这个映射:
CreateMap<SourceBase, DestBase>()
.ForMember(dest => dest.MyString, o => o.MapFrom(x => x.TheString))
.Include<SourceDerived, DestDerived>();
CreateMap<SourceDerived, DestDerived>();
Mapper.AssertConfigurationIsValid(); // Exception is thrown here
CreateMap()
.ForMember(dest=>dest.MyString,o=>o.MapFrom(x=>x.TheString))
.Include();
CreateMap();
Mapper.AssertConfiguration验证();//这里抛出异常
但是,这会产生一个映射错误,表示MyString未映射到dest上。有什么好处?我真的需要在所有派生类型中重复基类属性的映射吗(我的实际代码中有不止一个子类)
编辑:
确切的例外情况是无法映射DestDevertive上的以下1属性:MyString。添加自定义映射表达式、忽略或重命名destDestDerivated上的属性。请查看此帖子:
如果您在下面的代码中声明它(使用AutoMapper 1.1.0.188),那么它可以正常工作。我不确定这是否解决了你的问题
var result = Mapper.CreateMap<SourceBase, DestBase>()
.ForMember(dest => dest.MyString, o => o.MapFrom(x => x.TheString));
//.Include<SourceDerived, DestDerived>();
Mapper.CreateMap<SourceDerived, DestDerived>();
var source = new SourceDerived();
var destDerived = new DestDerived();
source.TheString = "teststring";
var mapResult = Mapper.Map<SourceBase, DestBase>(source, destDerived).MyString;
Console.WriteLine(mapResult);
var result=Mapper.CreateMap()
.ForMember(dest=>dest.MyString,o=>o.MapFrom(x=>x.TheString));
//.Include();
CreateMap();
var source=new SourceDerived();
var destDelivered=新destDelivered();
source.TheString=“teststring”;
var mapreult=Mapper.Map(source,destDestevered).MyString;
Console.WriteLine(mapResult);
确切的错误是什么?不,这不适用于我们。如果调用Mapper.Map(source、typeof(SourceDerived)、typeof(DestDerived)),那么示例代码就会失败,这真的很奇怪。没有异常,但也没有进行映射。我们还调用了Mapper.assertconfigurationsvalid()
。我想你会发现,如果你在设置映射后立即添加该调用,你会得到我文章中提到的异常。谢谢你的评论。对不起,我帮不了什么忙!没问题,我不知道为什么您的示例有效,但其他对Map的调用无效!