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问题描述
给出以下几类:
class Parent { string Name { get; set; } List<Child> children { get; set; } } class Child { short ChildId { get; set; } string Name { get; set; } } class ParentViewModel { string Name { get; set; } short[] ChildIds { get; set; } }当我打电话
Mapper.Map<Parent, ParentViewModel>(vm);是否可以使AutoMapper将Child.ChildId的列表转换为ParentViewModel.ChildIds?
Is it possible to get AutoMapper to translate the list of Child.ChildId to ParentViewModel.ChildIds?
我试图做这样的事情:
Mapper.CreateMap<Child, short>() .FromMember(dest => dest, opt => opt.MapFrom(src => src.ChildId)); Mapper.CreateMap<Parent, ParentViewModel>() .FromMember(dest => dest.ChildIds, opt => opt.MapFrom(src => new[] {src.children}));但是我收到一条错误消息,说它不知道如何将Child对象列表转换为int16.有什么建议吗?
But I get an error saying it doesn't know how to convert a list of Child objects to an int16. Any suggestions?
推荐答案使用LINQ查询仅获取ChildId:
Use a LINQ query to grab just the ChildIds:
.ForMember(d => d.ChildIds, o => o.MapFrom(s => s.Children.Select(c => c.ChildId).ToArray()));更多推荐
使用自动映射器将集合的属性映射到基元数组
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