Adding namespace to an XML string.

If I have a well-formed XML document in a string, what can I do to get a 
namespace added to it?  What class, properties, and methods can I use?



5/16/2005 6:48:52 AM
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Don wrote:
> If I have a well-formed XML document in a string, what can I do to get a 
> namespace added to it?  What class, properties, and methods can I use?

The simplest and the most effective way is to crate custom XmlReader 
which exposes required namespace. Here is the simplest form:

   public class NamespacedXmlReader : XmlTextReader
     public NamespacedXmlReader(TextReader r) :
       base(r) {}
     public override string NamespaceURI
         return NodeType == XmlNodeType.Element? "" : "";
     public override string Prefix
         return NodeType == XmlNodeType.Element? "foo" : "";

Then read XML via this reader:

string xml = @"<bar attr=""val"">baz</bar>";
XmlReader r = new NamespacedXmlReader(new StringReader(xml));
XmlDocument doc = new XmlDocument();

The result is
<foo:bar attr="val" xmlns:foo="">baz</foo:bar>

You can remove Prefix property override to get default namespace form:
<bar attr="val" xmlns="">baz</bar>

Oleg Tkachenko [XML MVP, MCP]
5/16/2005 9:19:13 AM

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