Gismo wrote:
Uzytkownik "Martin Honnen" <ma*******@yahoo.de> napisal w wiadomosci
news:Oq*************@TK2MSFTNGP09.phx.gbl...
Gismo wrote:
I have got file raport.rld which is an XML file generated by MS
Reporting
Services.
The problem is:
in this file are tags from two different namespaces
xmlns="http://schemas.microsoft.com/sqlserver/reporting/2003/10/reportdefini
tion"
xmlns:rd="http://schemas.microsoft.com/SQLServer/reporting/reportdesigner"
when I'm trying to use XPATH to get <teble> tag it doesn't work. (the
result is empty)
I've removed All tegs like
<rd:TypeName>System.Int32</rd:TypeName>
Now all is working fine but what to do when I have tags from two
different
namespaces?
You need to declare a prefix for every namespace and then use the prefix
in your XPath expression. How you do that depends on the environment, if
you use XPath inside of an XSLT stylesheet you can simply declare the
prefixes with
<xsl:stylesheet
xmlns:rd="xmlns:rd="http://schemas.microsoft.com/SQLServer/reporting/reportd
esigner"
and then use
rd:TypeName
in your XPath expression.
If you are using an API like selectNodes/selectSingleNode then you need
to call
xmlDocument.setProperty("SelectionNamespaces",
"xmlns:rd='http://schemas.microsoft.com/SQLServer/reporting/reportdesigner'"
)
There is no method like setProperty.
Sorry, I thought you might be using MSXML but you use .NET, there indeed
is no such method.
With .NET you need an XmlNamespaceManager and declare the prefixes for
your XPath expressions and then pass that manager to the SelectNodes method.
For instance with the example document being
<?xml version="1.0" encoding="UTF-8"?>
<gods xmlns="http://vatican.va/2004/gods">
<god name="Kibo" />
<god name="Jaffo" />
<dv:devil xmlns:dv="http://vatican.va/2004/devils" name="Xibo" />
</gods>
the following successfully queries the document using XPath
using System;
using System.Xml;
public class Test20040402 {
public static void Main (string[] args) {
XmlDocument xmlDocument = new XmlDocument();
xmlDocument.Load(@"test20040402.xml");
XmlNamespaceManager namespaceManager = new
XmlNamespaceManager(xmlDocument.NameTable);
namespaceManager.AddNamespace("gs", "http://vatican.va/2004/gods");
namespaceManager.AddNamespace("dv", "http://vatican.va/2004/devils");
XmlNodeList gods = xmlDocument.SelectNodes("/gs:gods/gs:god",
namespaceManager);
Console.WriteLine("Found {0} elements.", gods.Count);
foreach (XmlNode node in gods) {
Console.WriteLine(node.Name);
}
gods = xmlDocument.SelectNodes("/gs:gods/dv:devil", namespaceManager);
Console.WriteLine("Found {0} elements.", gods.Count);
foreach (XmlNode node in gods) {
Console.WriteLine(node.Name);
}
}
}
--
Martin Honnen
http://JavaScript.FAQTs.com/ 
