AutoMapper是一个对象映射库，它可以将一个对象映射到另一个对象。当我们需要将一个对象映射到多个对象时，可以使用链式映射/传递映射/链式映射。

链式映射使用AutoMapper的ForMember()方法和MapFrom()方法来将一个对象的属性映射到另一个对象的属性。代码示例：

public class Source { public int Id { get; set; } public string Name { get; set; } }

public class Destination1 { public int Id { get; set; } public string FirstName { get; set; } }

public class Destination2 { public int Id { get; set; } public string LastName { get; set; } }

public static void Main(string[] args) { Mapper.Initialize(cfg => { cfg.CreateMap() .ForMember(dest => dest.Id, opt => opt.MapFrom(src => src.Id)) .ForMember(dest => dest.FirstName, opt => opt.MapFrom(src => src.Name));

    cfg.CreateMap()
        .ForMember(dest => dest.Id, opt => opt.MapFrom(src => src.Id))
        .ForMember(dest => dest.LastName, opt => opt.MapFrom(src => src.Name));
});

var source = new Source { Id = 1, Name = "John Doe" };
var destination1 = Mapper.Map(source);
var destination2 = Mapper.Map(source);

}

传递映射可以通过AutoMapper的内置映射特性来实现。代码示例：

public class Source { public int Id { get; set; } public string Name { get; set; } public SubSource Sub { get; set; } }

public class SubSource { public int SubId { get; set; } public string SubName { get; set; } }

public class Destination { public int Id { get; set; } public string Name { get; set; } public int