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nick_n_a
Asked:2020-10-27 20:17:51 +0800 CST2020-10-27 20:17:51 +0800 CST

为什么模型没有被传递给视图？

  • 772

有一个页面

@model MyProj.WebUI.Models.ProductsListViewModel
@{
ViewBag.Title = "Index";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<span>@this.Model.ToString();</span> // 6

最后一行抛出异常

[NullReferenceException：对象引用未设置为对象的实例。] c:\inetpub\wwwroot\Views\Home\Index.cshtml:6
System.Web.WebPages.WebPageBase.ExecutePageHierarchy() 中的 ASP._Page_Views_Home_Index_cshtml.Execute() +252
System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +146
System.Web.WebPages.StartPage.ExecutePageHierarchy() +88
System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +106
System .Web.Mvc.ViewResultBase.ExecuteResult（ControllerContext 上下文）+374

我家的控制器是这样的

public class HomeController : BaseController{
        private IProductRepository _repository;
        public HomeController(IProductRepository productRepository)
        {
            this._repository = productRepository;
        }

        [CustomAuthorize]
        public ActionResult Index()
        {
            return View();
        }

    }
}

Controller-Model 绑定写在哪里？

c#

1 个回答

  1. Best Answer

    Controller-Model 绑定写在哪里？

    return View(model);

    例如：

    public ActionResult Index(int page = 1)
{
    if (page < 1) page = 1;

    IList<Product> products = _repository.GetAll( skip: (page-1) * PAGE_SIZE,
                                                  take:PAGE_SIZE );

    var model = new ProductsListViewModel{
        Products = products,
        PageInfo = new PageInfo {
            CurrentPage = page,
            TotalItems = _repository.Count(),
            PageSize = PAGE_SIZE
        };
    };
    return View(model);
}
    • 2

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