Linux 使用 C# 取消注释 XML 文件中的注释节点
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To uncomment a commented node in a XML file using C#
提问by Ananth
I have a XML file which has a node which is commented out. I have created this node using the syntax:
我有一个 XML 文件，其中有一个被注释掉的节点。我使用以下语法创建了这个节点：
relTableCommentedNode = xDoc.CreateNode(XmlNodeType.Comment, "RELTABLECOMMENTED", "np");
relTableCommentedNode = xDoc.CreateNode(XmlNodeType.Comment, "RELTABLECOMMENTED", "np");
What is the best approach to uncomment this node? Can I identify this node based on the name which I used to create the node (RELTABLECOMMENTED)?
取消注释此节点的最佳方法是什么？我可以根据我用来创建节点的名称 ( RELTABLECOMMENTED)来识别这个节点吗？
This the commented node:
这是注释节点：
<code>
<pre>
<!--<reltable toc="no" class="- map/reltable ">
<relheader class="- map/relheader ">
<relcolspec type="concept" class="- map/relcolspec ">
</relheader>
<relrow class="- map/relrow ">
<relcell class="- map/relcell ">
<topicref href="concepts\about_cannedgoods.dita" copy-to="concepts\about_cannedgoods.dita" class="- map/topicref " xmlns:dctm="http://www.documentum.com">
</topicref>
</relcell>
</relrow>
</reltable> -->
</pre>
</code>
采纳答案by Chris Taylor
To the best of my knowledge, using XmlDocument, there is no direct way to do this. You will need to do something like the following
据我所知，使用 XmlDocument，没有直接的方法可以做到这一点。您将需要执行以下操作
- Get the value of the comment node
- Create a new XmlNode with the value from step 1
- Delete the comment node
- Add the new node from step 2 to the DOM tree
- 获取评论节点的值
- 使用步骤 1 中的值创建一个新的 XmlNode
- 删除评论节点
- 将步骤 2 中的新节点添加到 DOM 树中
Here is an example with a slightly simplified version of your XML and addressing your quesion in the comments on finding the correct comment node. Note that I query for all comment nodes, obviously you can be more specific and query the portion of the document that you are interested in.
这是一个示例，其中包含稍微简化的 XML 版本，并在有关查找正确注释节点的注释中解决了您的问题。请注意，我查询了所有评论节点，显然您可以更具体地查询您感兴趣的文档部分。
string xml = @"
<root>
<!--<reltable toc='no' class='- map/reltable '>
<relheader class='- map/relheader '>
<relcolspec type='concept' class='- map/relcolspec '/>
</relheader>
</reltable> -->
<!--<reltable toc='no' class='- map '>
<relheader class='- map/relheader '>
<relcolspec type='concept' class='- map/relcolspec '/>
</relheader>
</reltable> -->
</root>";
XmlDocument xdoc = new XmlDocument();
xdoc.LoadXml(xml);
XmlNodeList commentedNodes = xdoc.SelectNodes("//comment()");
var commentNode = (from comment in commentedNodes.Cast<XmlNode>()
where comment.Value.Contains("class='- map '")
select comment).FirstOrDefault();
if (commentNode != null)
{
XmlReader nodeReader = XmlReader.Create(new StringReader(commentNode.Value));
XmlNode newNode = xdoc.ReadNode(nodeReader);
commentNode.ParentNode.ReplaceChild(newNode, commentNode);
}
