XPathNavigator not working when schema used

[Obe]

PLEASE HELP!

I'm writing a function to populate DropDownLists from and xml file. I
am having a problem getting my XPathNavigator to select any nodes when
I attach a schema to my xml document.

Xml Doc: Dropdown.xml
XML Schema: Dropdown.xsd

Here is my XML Document...

<?xml version="1.0" encoding="utf-8" ?>
<DropDownList s xmlns="http://tempuri.org/DropDown.xsd">
<DropDownList name="DataSourc e">
<Option name="SqlServer " value="SqlServe r" />
<Option name="Oracle" value="Oracle" />
<Option name="DB2" value="DB2" />
</DropDownList>
<DropDownList name="Language" >
<Option name="ASP" value="ASP" />
<Option name="ASP.Net" value="ASP.Net" />
</DropDownList>
</DropDownLists>

....and here is my code...

private void LoadDropdownMen u(string DropDownName)
{
DropDownList GenericDropDown =
(DropDownList)F indControl(Drop DownName);

XPathDocument xpDoc = new XPathDocument(S erver.MapPath(" .") +
"\\Dropdown.xml ", XmlSpace.Preser ve);
XPathNavigator xNav = xpDoc.CreateNav igator();

XPathNodeIterat or xNode =
xNav.Select("/DropDownLists/DropDownList[@name='" + DropDownName +
"']/Option");

while(xNode.Mov eNext())
{
GenericDropDown .Items.Add(new
ListItem(xNode. Current.GetAttr ibute("name","" ),xNode.Current .GetAttribute(" value","http://tempuri.org/DropDown.xsd")) );
}
}

I don't get any nodes returned in my XPathNodeIterat or using the above
xml file and code. If I remove xmlns="http://tempuri.org/DropDown.xsd"
from my xml file, everything works perfectly.

I want to be able to use a schema with my xml file. Can someone please
explain what I am doing wrong?

Thanks in advance.

[Bjoern Hoehrmann]

* Obe wrote in microsoft.publi c.dotnet.xml:

I'm writing a function to populate DropDownLists from and xml file. I
am having a problem getting my XPathNavigator to select any nodes when
I attach a schema to my xml document.

You are not attaching a schema to the document, you are declaring the
namespace of the elements in your document. An XPath expression ala
//name refers to all "name" elements in no namespace, this fails if
the element is in a namespace. You need to declare a prefix for the
namespace and use that prefix in your XPath expressions. You can do
that using XmlNamespaceMan ager, see the Remarks section in e.g.

* http://msdn.microsoft.com/library/en...lecttopic2.asp

for an example and further details. The XML Namespaces FAQ might also
be helpful to resolve further issues involving namespaces,

http://www.rpbourret.com/xml/NamespacesFAQ.htm