blocks|key|904434|text|这实际上是.NET+4.0的一个问题。要修复它，您需要覆盖属性编码过程。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|904435|public+class+HtmlAttributeNoEncoding+:+System.Web.Util.HttpEncoder
{
++++protected+override+void+HtmlAttributeEncode(string+value,+System.IO.TextWriter+output)
++++{
++++++++output.Write(value);
++++}
}|code-block|syntax|javascript|904436|然后将其放入<system.web>元素下的web.config文件中：|offset|length|style|CODE|904437|<httpRuntime+encoderType="HtmlAttributeNoEncoding"/>|904438|我找到了这个here。|904439|entityMap|0|LINK|mutability|MUTABLE|url|http://forums.asp.net/p/1554455/3818604.aspx^0|0|0|6|C|0|0|6|4|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|10|8|@$I|11|J|12|K|L]]|9|@]|A|$]]|$1|M|3|N|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|14|8|@]|9|@$I|15|J|16|1|17]]|A|$]]|$1|Q|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]]]

This is actually an issue with .NET 4.0. To fix it you need to override the attribute encoding process.

<pre><code>public class HtmlAttributeNoEncoding : System.Web.Util.HttpEncoder
{
 protected override void HtmlAttributeEncode(string value, System.IO.TextWriter output)
 {
 output.Write(value);
 }
}
</code></pre>

Then put this in your web.config file under the <code>&lt;system.web&gt;</code> element:

<pre><code>&lt;httpRuntime encoderType="HtmlAttributeNoEncoding"/&gt;
</code></pre>

I found this <a href="http://forums.asp.net/p/1554455/3818604.aspx" rel="noreferrer">here</a>.

blocks|key|1119277|text|虽然Ryan提供的解决方案可能有效，但它有点像用锤子拍打苍蝇。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1119278|问题在于，在调用MergeAttributes()期间，TagBuilder会对字符串进行编码。对于按钮链接中所需的Javascript，这会影响单引号和空格。|1119279|所需扩展方法的最后一步是返回MvcHtmlString+(不接收进一步的编码)，因此在创建该对象之前对字符串进行一些简单的文本更正(撤消编码)是完全合理的。|offset|length|style|CODE|1119280|例如：|1119281|return+new+MvcHtmlString(tb.ToString(TagRenderMode.Normal).Replace("&#39;",+"\'").Replace("&#32;","+"));|code-block|syntax|javascript|1119282|一个完整的ActionLinkButton助手如下所示：|1119283|public+static+class+ActionLinkButtonHelper
{
++++public+static+MvcHtmlString+ActionLinkButton(this+HtmlHelper+htmlHelper,+string+buttonText,+string+actionName,+object+routeValuesObject+=+null,+object+htmlAttributes+=+null)
++++{
++++++++return+ActionLinkButton(htmlHelper,+buttonText,+actionName,+"",+routeValuesObject,+htmlAttributes);
++++}
++++public+static+MvcHtmlString+ActionLinkButton(this+HtmlHelper+htmlHelper,+string+buttonText,+string+actionName,+string+controllerName,+object+routeValuesObject+=+null,+object+htmlAttributes+=+null)
++++{
++++++++if+(string.IsNullOrEmpty(controllerName))
++++++++{
++++++++++++controllerName+=+HttpContext.Current.Request.RequestContext.RouteData.Values["controller"].ToString();
++++++++}
++++++++RouteValueDictionary+routeValues+=+new+RouteValueDictionary(routeValuesObject);
++++++++RouteValueDictionary+htmlAttr+=+HtmlHelper.AnonymousObjectToHtmlAttributes(htmlAttributes);
++++++++TagBuilder+tb+=+new+TagBuilder("button");
++++++++tb.MergeAttributes(htmlAttr,+false);
++++++++string+href+=+UrlHelper.GenerateUrl("default",+actionName,+controllerName,+routeValues,+RouteTable.Routes,+htmlHelper.ViewContext.RequestContext,+false);

++++++++tb.MergeAttribute("type",+"button");
++++++++tb.SetInnerText(buttonText);
++++++++tb.MergeAttribute("value",+buttonText);
++++++++tb.MergeAttribute("onclick",+"location.href=\'"%2B+href+%2B"\';return+false;");
++++++++return+new+MvcHtmlString(tb.ToString(TagRenderMode.Normal).Replace("&#39;",+"\'").Replace("&#32;","+"));
++++}
}|1119284|这将完成添加按钮链接所需的所有操作，具有与ActionLink一起使用的最有用的重载，并且不会因为更改属性编码过程而潜在地导致应用程序范围内的意外更改。|1119285|entityMap^0|0|0|E|D|0|0|0|0|0|L|A|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|10|8|@$F|11|G|12|H|I]]|9|@]|A|$]]|$1|J|3|K|5|6|7|13|8|@]|9|@]|A|$]]|$1|L|3|M|5|N|7|14|8|@]|9|@]|A|$O|P]]|$1|Q|3|R|5|6|7|15|8|@]|9|@]|A|$]]|$1|S|3|T|5|N|7|16|8|@]|9|@]|A|$O|P]]|$1|U|3|V|5|6|7|17|8|@$F|18|G|19|H|I]]|9|@]|A|$]]|$1|W|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]]|X|$]]

While the solution provided by Ryan may work, it is a little like using a hammer to swat a fly.

The issue is that TagBuilder encodes strings during calls to MergeAttributes(). For the required Javascript in a button link this affects single quotes and spaces.

The last step of the required extension method is the return of an <code>MvcHtmlString</code> (which receives no further encoding), so it is perfectly reasonable to make some simple text corrections to the string (to undo the encoding) before creating that object. 

<h2>e.g.</h2>

<pre><code>return new MvcHtmlString(tb.ToString(TagRenderMode.Normal).Replace("&amp;#39;", "\'").Replace("&amp;#32;"," "));
</code></pre>

<h2>A complete ActionLinkButton helper is shown below:</h2>

<pre><code>public static class ActionLinkButtonHelper
{
 public static MvcHtmlString ActionLinkButton(this HtmlHelper htmlHelper, string buttonText, string actionName, object routeValuesObject = null, object htmlAttributes = null)
 {
 return ActionLinkButton(htmlHelper, buttonText, actionName, "", routeValuesObject, htmlAttributes);
 }
 public static MvcHtmlString ActionLinkButton(this HtmlHelper htmlHelper, string buttonText, string actionName, string controllerName, object routeValuesObject = null, object htmlAttributes = null)
 {
 if (string.IsNullOrEmpty(controllerName))
 {
 controllerName = HttpContext.Current.Request.RequestContext.RouteData.Values["controller"].ToString();
 }
 RouteValueDictionary routeValues = new RouteValueDictionary(routeValuesObject);
 RouteValueDictionary htmlAttr = HtmlHelper.AnonymousObjectToHtmlAttributes(htmlAttributes);
 TagBuilder tb = new TagBuilder("button");
 tb.MergeAttributes(htmlAttr, false);
 string href = UrlHelper.GenerateUrl("default", actionName, controllerName, routeValues, RouteTable.Routes, htmlHelper.ViewContext.RequestContext, false);

 tb.MergeAttribute("type", "button");
 tb.SetInnerText(buttonText);
 tb.MergeAttribute("value", buttonText);
 tb.MergeAttribute("onclick", "location.href=\'"+ href +"\';return false;");
 return new MvcHtmlString(tb.ToString(TagRenderMode.Normal).Replace("&amp;#39;", "\'").Replace("&amp;#32;"," "));
 }
}
</code></pre>

This does everything you need to add button links, has the most useful overloads you use with <code>ActionLink</code> and does not potentially cause unexpected application-wide changes by changing the attribute encoding process.

blocks|key|904560|text|在MergeAttribute期间，TagBuilder不会对字符串进行编码，因为它直接操作Attributes属性，然后使用ToString()获取字符串表示也会转义字符。编码很可能是在ToString()期间进行的。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|904561|下面的类用JavaScript解决了这个问题：|904562|public+class+JavaScriptTagBuilder+:+TagBuilder
{
++++public+string+OnClick+{+get;+set;+}

++++public+JavaScriptTagBuilder(string+tagName)
++++++++:+base(tagName)
++++{
++++}

++++public+override+string+ToString()
++++{
++++++++string+openingTag+=+"<"+%2B+TagName;
++++++++return+base.ToString().Replace(openingTag,+string.Format("{0}+onclick=\"{1}\"",+openingTag,+OnClick));
++++}
}|code-block|syntax|javascript|904563|entityMap^0|1|E|I|A|1R|A|2M|A|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]|$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|Y|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|N|$]]

The <code>TagBuilder</code> does not encode the string during <code>MergeAttribute</code> as directly manipulating the Attributes property and then getting the string representation with <code>ToString()</code> is also escaping the characters. Most probably the encoding happens during <code>ToString()</code>.

The class below solves the problem with JavaScript:

<pre><code>public class JavaScriptTagBuilder : TagBuilder
{
 public string OnClick { get; set; }

 public JavaScriptTagBuilder(string tagName)
 : base(tagName)
 {
 }

 public override string ToString()
 {
 string openingTag = "&lt;" + TagName;
 return base.ToString().Replace(openingTag, string.Format("{0} onclick=\"{1}\"", openingTag, OnClick));
 }
}
</code></pre>

blocks|key|1119367|text|我去迪斯科有点晚了，但你可以在返回HTML之前对其进行解码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1119368|return+new+MvcHtmlString(System.Web.HttpUtility.HtmlDecode(tb.ToString(TagRenderMode.Normal));|code-block|syntax|javascript|1119369|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I'm a little late to the disco but you could decode the HTML before returning it:

<pre><code>return new MvcHtmlString(System.Web.HttpUtility.HtmlDecode(tb.ToString(TagRenderMode.Normal));
</code></pre>

I have the following <code>HtmlHelper</code> method that I want to create a button that does a redirect with JavaScript:

<pre><code>public static string JavaScriptButton(this HtmlHelper helper, string value,
 string action, string controller, object routeValues = null, object htmlAttributes = null)
{
 var a = (new UrlHelper(helper.ViewContext.RequestContext))
 .Action(action, controller, routeValues);

 var builder = new TagBuilder("input");
 builder.Attributes.Add("type", "submit");
 builder.Attributes.Add("value", value);
 builder.Attributes.Add("class", "button");
 builder.Attributes.Add("onclick", string.Format("javascript:location.href='{0}'", a));
 builder.MergeAttributes(new RouteValueDictionary(htmlAttributes));

 return MvcHtmlString.Create(builder.ToString(TagRenderMode.SelfClosing)).ToString(); 
}
</code></pre>

The problem is that the line that creates the onclick handler is getting escaped by the tagbuilder, the resulting html is:

<pre><code>&lt;input class="button" onclick="javascript:location.href=&amp;#39;&amp;#39;" type="submit" value="Return to All Audits" /&gt;
</code></pre>

Is there anyway I can stop this behaviour?

Stop the tag builder escaping single quotes ASP.NET MVC 2

我有以下HtmlHelper方法，我想要创建一个使用JavaScript执行重定向的按钮：public static string JavaScriptButton(this HtmlHelper helper, string value,                        string action, s...

问停止标记构建器转义单引号ASP.NET MVC 2
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