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How to remove all comment tags from XML string

I need to remove all comments ( between <!-- and --tags) from XML string.

I tried the following code but comments are still present.
Or is it better to open xml string with a StreamReader, read all the text
inside and remove all the "<!--" and "-->" substrings?

How to remove comments ?
string RemoveComments( string sDoc) {
XmlDocument xDoc = new XmlDocument();
xDoc.PreserveWh itespace = false;
xDoc.LoadXml(sD oc);
XPathNavigator nav = xDoc.CreateNavi gator();
while (nav.MoveToNext (XPathNodeType. Comment)) {
nav.DeleteSelf( );
}

StringWriter sw = new StringWriter();
XmlTextWriter xtw = new XmlTextWriter(s w);
xtw.IndentChar = ' ';
xtw.Indentation = 2;
xtw.Formatting = Formatting.Inde nted;

xDoc.WriteConte ntTo(xtw);
xtw.Close();
sw.Close();
return sw.ToString();
}
Andrus.

Apr 9 '07 #1
1 14320
Try something like this:

Use an XPath expression to get all the comment nodes, then iterate through
to remove them:

XmlNodeList list = xmlDoc.SelectNo des("//comment()");

foreach(XmlNode node in list)
{
node.ParentNode .RemoveChild(no de);
}

-- Peter
Site: http://www.eggheadcafe.com
UnBlog: http://petesbloggerama.blogspot.com
Short urls & more: http://ittyurl.net


"Andrus" wrote:
I need to remove all comments ( between <!-- and --tags) from XML string.

I tried the following code but comments are still present.
Or is it better to open xml string with a StreamReader, read all the text
inside and remove all the "<!--" and "-->" substrings?

How to remove comments ?
string RemoveComments( string sDoc) {
XmlDocument xDoc = new XmlDocument();
xDoc.PreserveWh itespace = false;
xDoc.LoadXml(sD oc);
XPathNavigator nav = xDoc.CreateNavi gator();
while (nav.MoveToNext (XPathNodeType. Comment)) {
nav.DeleteSelf( );
}

StringWriter sw = new StringWriter();
XmlTextWriter xtw = new XmlTextWriter(s w);
xtw.IndentChar = ' ';
xtw.Indentation = 2;
xtw.Formatting = Formatting.Inde nted;

xDoc.WriteConte ntTo(xtw);
xtw.Close();
sw.Close();
return sw.ToString();
}
Andrus.

Apr 9 '07 #2

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