how can i remove xml comments from xml file ?C#

Question

hi,

how to remove xml comments from an existing xml file.

Answer 1

Hi
Please check this link
for removing xml comments

http://bytes.com/topic/c-sharp/answers/629972-how-remove-all-comment-tags-xml-string

[
string RemoveComments(string sDoc) {
XmlDocument xDoc = new XmlDocument();
xDoc.PreserveWhitespace = false;
xDoc.LoadXml(sDoc);
XPathNavigator nav = xDoc.CreateNavigator();
while (nav.MoveToNext(XPathNodeType.Comment)) {
nav.DeleteSelf();
}
]

---

Happy Codings, RDRaja

Answer 2

You have to search comments nodes with an XPath query.
If you just need to remove any comment node, use something like:

XmlDocument doc = new XmlDocument();

//Code to load Xml data in doc

XmlNodeList allComments = doc.SelectNodes("//comment()");

foreach(XmlNode n in allComments)
{
n.ParentNode.RemoveChild(n);
}

//Save your document

If you want to remove only specific comment nodes, XPath query must be refined accordingly.

Hope this helps.

Answer 3

hi,


XmlDocument xDoc = new XmlDocument();
xDoc.PreserveWhitespace = false;
xDoc.LoadXml("Books.xml");//--------------------------------------EXception
XPathNavigator nav = xDoc.CreateNavigator();
while (nav.MoveToNext(XPathNodeType.Comment))
{
nav.DeleteSelf();
}
xDoc .Save("Books.xml");

-----
or
-----
XmlDocument xDoc = new XmlDocument();
xDoc.PreserveWhitespace = false;
xDoc.LoadXml("Books.xml");//--------------------------------------EXception
XmlNodeList allComments = xDoc .SelectNodes("//comment()");
foreach(XmlNode n in allComments)
{
n.ParentNode.RemoveChild(n);
}

xDoc .Save("Books.xml");

for example xml file

<?

 

xml version="1.0" encoding="utf-8" ?>
<!-- hello world-->
<Book>
<name>xyz</name>
<author>ABC</author>
</Book>

i want to remove <!-- hello world--> comment

XmlException was un handled
"Data at the root level is invalid. Line 1, position 1."

Answer 4

use this code
            XmlDocument xDoc = new XmlDocument();
            //xDoc.PreserveWhitespace = false;
            xDoc.Load("Books.xml");
            XmlNodeList list = xDoc.SelectNodes("//comment()");

            foreach (XmlNode node in list)
            {
                node.ParentNode.RemoveChild(node);
            }
textBox1.Text = xDoc.OuterXml.ToString();

---

Happy Codings, RDRaja

Answer 5

LoadXml is used to Loads the XML document from the specified string

if you want to get xml from file, you can use Load Method of XMLDocument

---

Happy Codings, RDRaja

Answer 6

How about the power of regular expressions?

string xml = @"<?xml version='1.0' encoding='utf-8'?>
<!-- Test -->
<Pal>
  <!-- Do
       not
       remove
       -->
  <abc>DEF</abc>
  
</Pal>";

string pattern = @"(<!--.*?--\>)";

Console.WriteLine( Regex.Replace( xml, pattern, string.Empty, RegexOptions.Singleline ) );

/* output:
 <?xml version='1.0' encoding='utf-8'?>

<Pal>

  <abc>DEF</abc>

</Pal> */

---

William Wegerson (www.OmegaCoder.Com)

Answer 7

Thanks Dharmalinga Raja .