Menu
I am using ASP.NET MVC 3.0 and getting the following error in *_Shared\Layout.cshtml*
Error executing child request for handler 'System.Web.Mvc.HttpHandlerUtil+ServerExecuteHttpHandlerAsyncWrapper'.
I get error at @{ Html.RenderAction("Menu", "Nav"); }
<!DOCTYPE html>
<html>
<head>
<title>@ViewBag.Title</title>
<link href="@Url.Content("~/Content/Site.css")" rel="stylesheet" type="text/css" />
<script src="@Url.Content("~/Scripts/jquery-1.5.1.min.js")" type="text/javascript"></script>
</head>
<body>
<div id = "header">
<div class = "title">SPORTS STORE</div>
</div>
<div id = "categories">
@{ Html.RenderAction("Menu", "Nav"); }
</div>
<div id = "content">
@RenderBody()
</div>
</body>
</html>
In Controllers\NavController:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using SportsStore.Domain.Abstract;
using SportsStore.WebUI.Models;
namespace SportsStore.WebUI.Controllers
{
public class NavController : Controller
{
private IProductRepository repository;
public NavController(IProductRepository repo)
{
repository = repo;
}
public PartialViewResult Menu()
{
IEnumerable<string> categories = repository.Products
.Select(x => x.Category)
.Distinct()
.OrderBy(x => x);
return PartialView(categories);
}
}
}
In Views\Nav\Menu.cshtml:
@model IEnumerable<string>
@
{
Layout = null;
}
@Html.ActionLink("Home", "List", "Product")
@foreach (var link in Model)
{
@Html.RouteLink(link, new
{
controller = "Product",
action = "List",
category = link,
page = 1
}
)
}
501
asked Dec 03 '25 09:12
I could make the example to work.
There is a problem, however, with the code as it is posted. Note the line break in your exampe:
@
{
Layout = null;
}
While it should actually be
@{
Layout = null;
}
It generates the error you quoted "Error executing child request for handler 'System.Web.Mvc.HttpHandlerUtil+ServerExecuteHttpHandlerAsyncWrapper'", which is unhelpful, but when I pressed F5 I was taken to a page with a better description:
Parser Error Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.
Parser Error Message: A space or line break was encountered after the "@" character. Only valid identifiers, keywords, comments, "(" and "{" are valid at the start of a code block and they must occur immediately following "@" with no space in between.
57
Use the [ChildActionOnly] attribute on the Menu action like this:
[ChildActionOnly]
public PartialViewResult Menu()
{
IEnumerable<string> categories = repository.Products
.Select(x => x.Category)
.Distinct()
.OrderBy(x => x);
return PartialView(categories);
}
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