如何从文档中删除元素？

Question

Is there a way to iterate through a document and remove all <:p /> elements if they don't have any runs? I am trying to remove paragraphs if they look something like this:

<w:p>
    <w:pPr>
        <w:pStyle w:val="Heading1" />
        <w:numPr>
            <w:ilvl w:val="0" />
            <w:numId w:val="0" />
        </w:numPr>
        <w:ind w:left="432" />
    </w:pPr>
</w:p>

Here is what I have so far, but it only removes empty <w:p /> elements.

foreach (Paragraph P in D.Descendants<Paragraph>().Where(x => !x.HasChildren).ToList()

Answer 1

You can call this :

foreach (Paragraph P in D.Descendants<Paragraph>()
         .Where(o=>o.Descendants<Run>().Count() ==0).ToList()

But keep in mind if you have sections in your document, it may causes problems (check this for more information : http://msdn.microsoft.com/en-us/library/documentformat.openxml.wordprocessing.sectionproperties(v=office.14).aspx )

Answer 2

I would load the xml into an XmlDocument and then use linq:

XmlDocument doc = new XmlDocument();
doc.Load(@"C:\Path\To\Xml\File.xml");

var rootNode = doc.DocumentElement;

XmlNodeList ps = rootNode.SelectNodes("//p");
for (int i = 0; i < ps.Count; i++)
{
     if (ps[i].SelectNodes("//pr").Count == 0)
     {
         rootNode.RemoveChild(ps[i]);
     }
}

That code is completely untested though, but it does compile. Let me know if this isn't any good for you and check out do some googling of Xml Parsing!

Answer 3

i'm using Linq, This can do better.

/*parent is the document body*/
parent.Descendants<Paragraph>().Where(p=>p.Descendants<Run>().Count()==0).All(p =>
{
   p.Remove();
   return true;
});

Hope this helps. Cheers.