使用Automapper的ForEach方法和MapTo方法设置每个项的字段

代码示例：

Mapper.CreateMap() .ForMember(dest => dest.Status, opt => opt.MapFrom(src => src.IsEnabled ? "Enabled" : "Disabled"));

Mapper.CreateMap() .ForMember(dest => dest.Items, opt => opt.MapFrom(src => src.Items .Where(item => item.IsEnabled) // 过滤条件 .ToList())) // 转换为List .ForAllMembers(opt => opt.Ignore()); // 忽略原有属性映射

Mapper.CreateMap() .ForMember(dest => dest.Items, opt => opt.MapFrom(src => src.Items .Where(item => item.IsEnabled) // 过滤条件 .ToList())) // 转换为List .ForAllOtherMembers(opt => opt.ExplicitMap()); // 显式映射其他属性

var categoryModel = new CategoryModel { Id = 1, Name = "Category", Items = new List { new ItemModel { Id = 1, Name = "Item1", IsEnabled = true }, new ItemModel { Id = 2, Name = "Item2", IsEnabled = false }, new ItemModel { Id = 3, Name = "Item3", IsEnabled = true }, } };

var categoryViewModel = Mapper.Map(categoryModel); // categoryViewModel.Items[0].Status == "Enabled" // categoryViewModel.Items[1].Status == null // categoryViewModel.Items[2].Status == "Enabled"