HTML.Action引发异常:System.Web.dll中发生了类型为'System.Web.HttpException'的异常 [英] Html.Action throwing exception: An exception of type 'System.Web.HttpException' occurred in System.Web.dll

问题描述

我从博客主布局中的 @ Html.Action("getCategory"，"Blogs")中收到此错误.

I'm getting this error from @Html.Action("getCategory", "Blogs") in the master layout for my blog.

错误是:

System.Web.dll中发生类型'System.Web.HttpException'的异常，但未在用户代码中处理附加信息:执行处理程序'System.Web.Mvc.HttpHandlerUtil + ServerExecuteHttpHandlerAsyncWrapper'的子请求时出错.

An exception of type 'System.Web.HttpException' occurred in System.Web.dll but was not handled in user code Additional information: Error executing child request for handler 'System.Web.Mvc.HttpHandlerUtil+ServerExecuteHttpHandlerAsyncWrapper'.

这是我的控制人:

public ActionResult getCategory()
    {
        var categories = _repo.getBlogs().Select(c => new
        {
            c.Category
        }).ToList();
        return PartialView("_category", categories);
    }

这是我的部分观点:

@model  IEnumerable<MainSite.Data.Blog>

<div class="sw_categories">
<div class="sw_title">
    <h4>Categories</h4>
</div>
<ul class="arrows_list">
    @foreach (var c in Model)
    {
        <li><a href="#">@c</a></li>
    }
</ul>
</div>

我对ASP.NET MVC还是很陌生，所以任何人都可以向我解释该错误以及如何解决此问题吗?

I'm pretty new to ASP.NET MVC, so could anyone please explain the error to me and how I could fix this?

推荐答案

您要么想要..

1. 从 getCategory()返回博客的集合，因为这是您的部分期望值:

1. return a collection of Blogs from getCategory(), since that is what your partial is expecting:

IEnumerable<MainSite.Data.Blog>  

或更改局部模型的类型以与您从 getCategory()返回的内容相对应.示例:

or change the model type in the partial to correspond with what you're returning from getCategory(). Example:

IEnumerable<MainSite.Data.Blog.Category> 

这篇关于HTML.Action引发异常:System.Web.dll中发生了类型为'System.Web.HttpException'的异常的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！