Question

I want to remove all text nodes (but not any other type of node) from an XML file. How can I do this?

Example Input:

<root>
<slideshow id="1">
<Image>hii</Image>
<ImageContent>this</ImageContent>
<Thumbnail>is</Thumbnail>
<ThumbnailContent>A</ThumbnailContent>
</slideshow>
<slideshow id="2">
<Image>hii</Image>
<ImageContent>this</ImageContent>
<Thumbnail>is</Thumbnail>
<ThumbnailContent>B</ThumbnailContent>
</slideshow>
</root> 

Expected Output:

<root>
<slideshow id="1">
<Image></Image>
<ImageContent></ImageContent>
<Thumbnail></Thumbnail>
<ThumbnailContent></ThumbnailContent>
</slideshow>
<slideshow id="2">
<Image></Image>
<ImageContent></ImageContent>
<Thumbnail></Thumbnail>
<ThumbnailContent></ThumbnailContent>
</slideshow>
</root> 

Answer 1

How about:

var doc = XDocument.Load("test.xml");
doc.DescendantNodes()
   .Where(x => x.NodeType == XmlNodeType.Text ||
               x.NodeType == XmlNodeType.CDATA)
   .Remove();
doc.Save("clean.xml");

EDIT: Note that the above was before I realized that XCData derived from XText, leading to the simpler:

var doc = XDocument.Load("test.xml");
doc.DescendantNodes()
   .OfType<XText>()
   .Remove();
doc.Save("clean.xml");