＆QUOT;元素没有闭合QUOT;从升级到MVC3后MVC4错误 [英] "Element not closed" error after upgrading from MVC3 to MVC4
问题描述
剃刀2（其中附带MVC4）似乎并没有与剃刀1（从MVC3）完全向后兼容。
Razor 2 (which ships with MVC4) doesn't seem to be fully backwards compatible with Razor 1 (from MVC3).
由于升级换代，我发现了一个错误：
Since upgrading, I found an error:
在td@Html.Raw（伯爵元素没有被封闭，所有的元素必须是自闭或有一个匹配的结束标记。
The "td@Html.Raw(count" element was not closed. All elements must be either self-closing or have a matching end tag.
这引起了code，这是：
The code that caused this was:
<td@Html.Raw(count == null ? null : " class='has-item'")>
该解决方案是什么呢？
What is the solution to this?
推荐答案
剃刀分析程序重新编写的MVC 4的$p$psumably因为：
The Razor parser was re-written for MVC 4, presumably because:
在HTML5的规范中明确指出，未关闭的HTML标记来支持，但剃刀V1没有一个足够先进解析器来支持这一点。剃刀V2现在支持这个在W3C的规范中列出的元素。
The HTML5-specs clearly states that unclosed HTML-tags are supported, but Razor v1 didn't have an advanced enough parser to support this. Razor v2 now supports this with the elements listed in W3C's spec.
这里最简单的解决方案是将 @ 符号前增加一个空格：
The simplest solution here is to add a single space before the @ symbol:
<td @Html.Raw(count == null ? null : " class='has-item'")>
然而，在剃刀与MVC 4条件属性有一个更优雅的语法。
However, conditional attributes in Razor with MVC 4 have a more elegant syntax.
<td class="@(count == null ? null : "has-item")">
当属性值解析为空，该属性从元件省略。所以这个标记的输出可以是：
When an attribute value resolves to null, the attribute is omitted from the element. So the output of this markup is either:
<td>
...或...
...or...
<td class="has-item">
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