如何连接几个MvcHtmlString实例 [英] How to concatenate several MvcHtmlString instances

问题描述

我有关于如何连接，因为在的 MSDN ：

I have some doubts about how to concatenate MvcHtmlString instances because of this information found in MSDN :

MvcHtmlString类重新presents一个HTML-CN codeD字符串
  不宜带codeD再次

MvcHtmlString Class Represents an HTML-encoded string that should not be encoded again

我冒这个险的字符串是HTML-ZH codeD两次使用code这样的时候：

Do I risk that strings are HTML-encoded twice when using code like this:

var label = Html.LabelFor(model => model.Email);
var textbox = Html.TextBoxFor(model => model.Email);
var validation = Html.ValidationMessageFor(model => model.Email);

var result = MvcHtmlString.Create(
  label.ToString() + textbox.ToString() + validation.ToString());

（注：这是应该进入一个的HtmlHelper扩展方法，以减少看法code-重复）。

(note: this is supposed to go into an HtmlHelper extension method to reduce code-duplication in views).

推荐答案

您code是正确的。

从MSDN这片段是指编码视图引擎（如.NET 4的.aspx的视图引擎时使用＆LT;％：％＆GT; 或剃刀视图在MVC 3引擎）不应该再带code中的对象的字符串值。

That snippet from MSDN means that an encoding View Engine (such as the Aspx view engine in .NET 4 when using <%: %> or the Razor view engine in MVC 3) should not re-encode the string value of the object.

因此​​，例如：

string s = "<tag>";
var hs = MvcHtmlString.Create(s);

<%: s %>  -- outputs "&lt;tag&gt;"
<%: hs %> -- outputs "<tag>"

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