c# – 如何使用AutoMapper将List映射到ASP.NET MVC中的SelectLis

public class FooModel
{
    public int ModelId { get; set; }
    public string Description { get; set; }
}

然后你可以在FooModel和SelectListItem之间建立一个映射：

Mapper
    .CreateMap<FooModel,SelectListItem>()
    .ForMember(
        dest => dest.Value,opt => opt.MapFrom(src => src.ModelId.ToString())
    )
    .ForMember(
        dest => dest.Text,opt => opt.MapFrom(src => src.Description)
    );

然后当你获得IEnumerable< FooModel>你只需将它转换为IEnumerable< SelectListItem>：

IEnumerable<FooModel> models = ...
IEnumerable<SelectListItem> viewModels = Mapper
    .Map<IEnumerable<FooModel>,IEnumerable<SelectListItem>>(models);

更现实的例子是拥有以下视图模型：

public class MyViewModel
{
    public string SelectedItemId { get; set; }
    public IEnumerable<SelectListItem> Items { get; set; }
}

所以现在你的控制器动作可能如下所示：

public ActionResult Index()
{
    IEnumerable<FooModel> items = ...
    var viewModel = new MyViewModel
    {
        Items = Mapper.Map<IEnumerable<FooModel>,IEnumerable<SelectListItem>>(items)
    };
    return View(viewModel);
}

在强类型视图中：

@Html.DropDownListFor(
    x => x.SelectedItemId,new SelectList(Model.Items,"Value","Text")
)