使用ReplaceWith方法时编码问题的XDocument的XElement [英] Encoding problems with XDocument XElement when using ReplaceWith method

问题描述

我有以下代码：

XDocument doc = XDocument.Load(file);
var x = doc.Descendants("span");

XElement xelm = x.FirstOrDefault(xm => xm.Attribute("class").Value=="screenitems");

Regex rgx = new Regex("^<span class=\"screenitems\">(.*)</span>$");
Match mtc = rgx.Match(xelm.Value);
if (mtc.Success)
{
    xelm.ReplaceWith(mtc.Groups[1].Value);
}
doc.Save(file);

当我得到一个匹配和替换的XML文件加载到变量商务部使用了的XElement 变量 xelm的 ReplaceWith 方法，XML文件的内容是越来越编码，因此而不是像一个标记< p> 我得到 &放大器; LT; p&放大器; GT 。

When I get a match and replace the content of the XML file loaded into variable doc using the ReplaceWith method for the XElement variable xelm, the content of the XML file is getting encoded, so instead of having a tag like <p> I get <p&gt.

所以，我怎样才能防止它编码成HTML，但与匹配的正则表达式实际上取代了？

So How can I prevent that it encodes into html but actually replaces with the matched regex expression?

我一些解决方案已经在这里看了看，就像使用 XElement.Parse 方法或 HTTPUtility.HtmlDecode ，但我找不到弄不明白工作。它仍然编码如HTML。

I have looked at some of the solutions here, like using XElement.Parse method or HTTPUtility.HtmlDecode, but I couldn't get it to work. It still encodes like html.

推荐答案

虽然你可以尝试和分析你的正则表达式匹配到的XElement s到解决这个问题，我想你会对此错误的方式。

While you could try and parse your RegEx match into XElements to solve the problem, I think you're going about this the wrong way.

据我了解，你的要求是更换跨度与 screenItems元素类的内容。而不是做这个使用LINQ到XML和正则表达式的组合，你应该坚持的LINQ to XML。

As I understand it, your requirement is to replace a span element with the screenItems class with its contents. Rather than doing this using a combination of LINQ to XML and RegEx, you should stick to LINQ to XML.

找到你所有的跨度与 screenItems 类元素：

Find all your span elements with the screenItems class:

var spans = doc.Descendants("span")
    .Where(e => (string)e.Attribute("class") == "screenItems")
    .ToList();

然后用自己的内容替换每个这些：

Then replace each of these with their own content:

foreach (var span in spans)
{
    span.ReplaceWith(span.Nodes());
}

请参阅的一个工作示例这个小提琴。

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