C# ASP.NET MVC 3:使用PartialView时的StackOverflowException
我尝试过用Razor语法将MVC 2教程webshop转换为MVC 3,但我不理解以下问题 \u Layout.cshtmlC# ASP.NET MVC 3:使用PartialView时的StackOverflowException,c#,asp.net-mvc,asp.net-mvc-3,razor,C#,Asp.net Mvc,Asp.net Mvc 3,Razor,我尝试过用Razor语法将MVC 2教程webshop转换为MVC 3,但我不理解以下问题 \u Layout.cshtml <div id="header"> <div class="title">SPORTS STORE</div> </div> <div id ="categories"> @{Html.RenderAction("Menu", "Nav");} </div> @model IEnum
<div id="header">
<div class="title">SPORTS STORE</div>
</div>
<div id ="categories">
@{Html.RenderAction("Menu", "Nav");}
</div>
@model IEnumerable<WebShop_1_0.ViewModels.NavLink>
@{foreach(var link in Model)
{
Html.RouteLink(link.Text, link.RouteValues, new Dictionary<string, object>
{
{ "class", link.IsSelected ? "selected" : null }
});
}}
您的菜单操作需要返回PartialView(导航链接)而不是View(导航链接),否则您的布局将与菜单一起绘制,从而导致递归。哦哦!这会导致堆栈溢出:)是否有堆栈跟踪?这可能非常有用,因为StackOverflow可能表示递归。顺便说一句,我相信你问的地方是对的;)尝试
返回PartialView(导航链接)代码>可能重复的,并且必须将公共视图结果菜单(字符串类别)
更改为公共操作结果菜单(字符串类别)
我也遇到了同样的问题。这是书中的错误,还是MVC3对MVC2的改变?可能是书中的错误。我相信“视图”总是与布局一起呈现。
public class NavController : Controller
{
private IProductsRepository productsRepository;
public NavController(IProductsRepository productsRepository)
{
this.productsRepository = productsRepository;
}
public ViewResult Menu(string category)
{
// Just so we don't have to write this code twice
Func<string, NavLink> makeLink = categoryName => new NavLink
{
Text = categoryName ?? "Home",
RouteValues = new RouteValueDictionary(new
{
controller = "Products",
action = "List",
category = categoryName,
page = 1
}),
IsSelected = (categoryName == category)
};
// Put a Home link at the top
List<NavLink> navLinks = new List<NavLink>();
navLinks.Add(makeLink(null));
// Add a link for each distinct category
//navLinks.AddRange(productsRepository.Products.Select(x => x.Category.Trim()).Distinct().OrderBy(x => x));
var categories = productsRepository.Products.Select(x => x.Category.Trim());
foreach (string categoryName in categories.Distinct().OrderBy(x => x))
navLinks.Add(makeLink(categoryName));
return View(navLinks);
}
}
public class MvcApplication : System.Web.HttpApplication
{
public static void RegisterGlobalFilters(GlobalFilterCollection filters)
{
filters.Add(new HandleErrorAttribute());
}
public static void RegisterRoutes(RouteCollection routes)
{
/*Sorrend geccire számít*/
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapRoute(null, "", // Only matches the empty URL (i.e. ~/)
new
{
controller = "Products",
action = "List",
category = (string)null,
page = 1
}
);
routes.MapRoute(null, "Page{page}", // Matches ~/Page2, ~/Page123, but not ~/PageXYZ
new { controller = "Products", action = "List", category = (string)null },
new { page = @"\d+" } // Constraints: page must be numerical
);
routes.MapRoute(null, "{category}", // Matches ~/Football or ~/AnythingWithNoSlash
new { controller = "Products", action = "List", page = 1 }
);
routes.MapRoute(null, "{category}/Page{page}", // Matches ~/Football/Page567
new { controller = "Products", action = "List" }, // Defaults
new { page = @"\d+" } // Constraints: page must be numerical
);
routes.MapRoute(null, "{controller}/{action}");
}
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
RegisterRoutes(RouteTable.Routes);
ControllerBuilder.Current.SetControllerFactory(new NinjectControllerFactroy());
ModelBinders.Binders.Add(typeof(Cart), new CartModelBlinder());
}
}