将空XML元素渲染为父元素
[英]Render Empty XML Elements as Parent Elements
问题描述
I have a strange requirement where an application consuming some XML that my application is generating actually needs empty elements to be serialized as parent elements. 
我有一个奇怪的要求，即我的应用程序生成的消耗一些XML的应用程序实际上需要将空元素序列化为父元素。 For example: 例如：
<element foo="bar" /> should be: 应该：
<element foo="bar"></element> I'm not aware of any way that the XmlSerializer allows you to change this. 我不知道XmlSerializer允许你改变它的任何方式。 Does anybody know how to accomplish this? 有人知道怎么做到这一点吗？
3 个解决方案
解决方案1
4 已采纳 2009-12-07 15:36:12
I extended XmlTextWriter so that I could override the WriteEndElement() method, forcing it to call WriteFullEndElement(). 我扩展了XmlTextWriter，以便我可以覆盖WriteEndElement（）方法，强制它调用WriteFullEndElement（）。 This did the trick. 这样做了。
Note: for anybody that saw my question update, please ignore. 注意：对于任何看到我的问题更新的人，请忽略。 IE was rendering the XML in the shorthand form. IE以简写形式呈现XML。 As soon as I opened it in Notepad, I realized everything was working fine. 当我在记事本中打开它时，我意识到一切正常。
public class FullEndingXmlTextWriter : XmlTextWriter
{
public FullEndingXmlTextWriter(TextWriter w)
: base(w)
{
}
public FullEndingXmlTextWriter(Stream w, Encoding encoding)
: base(w, encoding)
{
}
public FullEndingXmlTextWriter(string fileName, Encoding encoding)
: base(fileName, encoding)
{
}
public override void WriteEndElement()
{
this.WriteFullEndElement();
}
}解决方案2
0 2009-12-04 20:14:18
You could solve it with a regular expression, making it a two-pass process. 您可以使用正则表达式解决它，使其成为两遍过程。
string xml = "element foo=\"bar\" />"
string pattern = @"<(?<elem>\w+)(?<body>\b.*)/>";
string substitute = @"<${elem} ${body}></${elem}>";
Regex regex = new Regex(pattern);
string goodresult = regex.Replace(xml, substitute);
解决方案3
0 2009-12-04 20:23:24
Scott Hanselman wrote a while back an article about stripping out empty elements from XML, and at a glance the code can be used for your purpose with a small alteration to the treatment of empty elements. Scott Hanselman不久前写了一篇关于从XML中删除空元素的文章，一目了然，代码可以用于您的目的，只需对空元素的处理进行一些小改动。 He also explains why using RegEx is a bad idea. 他还解释了为什么使用RegEx是一个坏主意。
I am pointing this out, as I don't know of a way to get XmlSerializer to do what you want. 我指出这一点，因为我不知道如何让XmlSerializer做你想做的事。
Another possibility, though I don't really know much about WPF is using the XAML serializer - look at the System.Window.Markup namespace documentation. 另一种可能性，虽然我对WPF并不太了解，但是使用XAML序列化程序 - 请查看System.Window.Markup命名空间文档。
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