Viewbag获取空值

Question

我有两个控制器 ResultController 和 HomeController。 从结果控制器的索引 ActionResult 我通过 ViewBag 将参数值传递给查看

public IActionResult Index(string listingType, string location, string viewType, [FromQuery] SearchModel searchModel)
        {
            SearchQuery model = new SearchQuery(searchModel, location, this.cacheService);
            var locationList = this.searchFactory.GetSearchService(model.ListingType).GetSearchResults(model, listingType);
            ViewBag.listingType = listingType;
            ViewBag.location = location;
            ViewBag.viewType = viewType;
            ViewBag.searchModel = searchModel;
            return View(locationList);
        } 

Now In View 通过 viewbag 接收值并将值传递给 Homecontroller 的 PropertyDetails

@Html.ActionLink(linkText: "Comfortable Apartment in Palace", "PropertyDetails", "Home", new { ListingId = pl.ListingId, listingType= ViewBag.listingType, location= ViewBag.location, viewType= ViewBag.viewType , searchModel= ViewBag.searchModel }, null)

在 Homecontroller 的 PropertyDetails 中

public IActionResult PropertyDetails(string listingType, string location, string viewType, [FromQuery] SearchModel searchModel, int ListingId)
        {
            SearchQuery model = new SearchQuery(searchModel, location, this.cacheService);
            var locationList = this.searchFactory.GetSearchService(model.ListingType).GetSearchResults(model, listingType);
            var result = locationList.SalesList.FirstOrDefault(s=>s.ListingId==ListingId);
            return View(result);
        }

在 PropertyDetails 中，我得到了 viewbag 传递的所有参数值，但 searchmodel 参数为 null。谁能告诉我为什么我在 searchmodel 中得到 null 范围？是否有任何替代方法来传递价值？

搜索模型类

public class SearchModel
    {
        public string PI { get; set; }
        public string SIMP { get; set; }
        public string L { get; set; }
        public string S { get; set; }
        public int[] LocationId;
    } 

Answer 1

@{
    var LocationId = (new int[] { 1, 2, 3 });
}
@Html.ActionLink("Comfortable Apartment in Palace", "PropertyDetails", "Home", new { ListingId = 1, listingType = 2, location = 3, viewType = 4, L = "L", PI = "PI", S = "S", SIMP = "SIMP", Locations = string.Join(",", LocationId) }, null)

SearchModel 类

public class SearchModel
    {
        public string PI { get; set; }
        public string SIMP { get; set; }
        public string L { get; set; }
        public string S { get; set; }
        public int[] LocationId;
        public string Locations { get; set; }
    }

正确：

new {  L = "L", PI = "PI", S = "S", SIMP = "SIMP" }

错误

 new { searchModel= ViewBag.searchModel }