c# - MVC 输入 Action 方法

Question

Action 方法的输入有问题。

我有这个代码:

public ViewResult List(int page_number = 1) {

    ProductsListViewModel model = new ProductsListViewModel {

        Products = repository.Products
        .OrderBy(m => m.ProductID).Skip((page_number - 1) * PageSize)
        .Take(PageSize),
        PagingInfo = new PagingInfo {

            CurrentPage = page_number,
            ItemsPerPage = PageSize,
            TotalItems = repository.Products.Count()


        }
    };

    return View(model);

}

我有这个路由配置:

public static void RegisterRoutes(RouteCollection routes) {
    routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

    routes.MapRoute(
         name: null,
         url: "Page{page}",
         defaults: new { Controller = "Product", action = "List" }
    );

    routes.MapRoute(
        name: "Default",
        url: "{controller}/{action}/{id}",
        defaults: new { controller = "Product", action = "List", id = UrlParameter.Optional }
    );
}

当我键入 URL 时:http://localhost/Page2 或 http://localhost/Page3page_number 的值始终为 1。为什么？

Answer 1

URL模板中的模板参数需要匹配Action中的参数名称。

因此要么更改配置以匹配操作。

routes.MapRoute(
     name: null,
     url: "Page{page_number}",
     defaults: new { Controller = "Product", action = "List" }
);

或更改操作以匹配配置

public ViewResult List(int page = 1) { ... }