要使用C＃注释一个注释节点XML文件 [英] To uncomment a commented node in a XML file using C#

问题描述

我有具有被注释掉节点的XML文件。我创建使用语法此节点 -

I have a XML file which has a node which is commented out. I have created this node using the syntax -

relTableCommentedNode = xDoc.CreateNode（XmlNodeType.Comment，RELTABLECOMMENTED，NP）;

relTableCommentedNode = xDoc.CreateNode(XmlNodeType.Comment, "RELTABLECOMMENTED", "np");

什么是去掉这一节点的最佳方法？我可以找出在此基础上我用来创建节点（RELTABLECOMMENTED）这个名字？

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) ?

本的注释节点
<该节点/ p>



This the commented node

 
<!--<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> -->

推荐答案

要尽我所知，使用XmlDocument的，有做这个没有直接的方法。您将需要做类似如下

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

1. 获取注释节点


2. 的价值创造从第1步


3. 价值的新的XMLNode删除注释节点


4. 从第2步中添加新节点到DOM树

1. Get the value of the comment node
2. Create a new XmlNode with the value from step 1
3. Delete the comment node
4. Add the new node from step 2 to the DOM tree

下面与您的XML和稍微简化版本寻址找到正确的注释节点在评论你的quesion一个例子。请注意，我查询所有注释节点，很明显，你可以更具体和查询你感兴趣的文件的部分。

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.

  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);
  }

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