I have finally boiled this down to one line of code...
Can someone explain why this happens?

VB.NET code: ** note the commented line, this is the culprit **
        Dim xsl As New System.Xml.Xsl.XslTransform()
        Dim xw As New System.IO.StringWriter()
        Dim xmldoc As New System.Xml.XmlDocument()
        Dim xsldoc As New System.Xml.XmlDocument()
        xmldoc.Load("test.xml")
        xsldoc.Load("test.xsl")
        'xsldoc.LoadXml(xsldoc.OuterXml)
        xsl.Load(xsldoc.CreateNavigator)
        xsl.Transform(xmldoc.CreateNavigator, Nothing, xw)
        Console.Write(xw.ToString)

XML input: (test.xml)
<xml>
  <node1 val="hello world" />
</xml>

XSL input: (test.xsl)
<xsl:stylesheet version="1.0"
      xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
      xmlns:msxsl="urn:schemas-microsoft-com:xslt">

<xsl:template match="/">
  <xsl:value-of select="count(document('')//*)" />  
</xsl:template>

</xsl:stylesheet>

Please explain why this happens, I do not want to use any file I/O in my 
program!
Thanks.

--scott

"rox.scott" wrote:

> I am porting all code from MSXML4 to .NET parser.
> 
> It appears that XPath Document() function is not working anymore ?!?!
> 
> I am passing empty string as the parameter to search within the current XSL 
> document:
> e.g (in this example, $cvf is always empty):
> 
> <xsl:template name="conversion">
>   <!-- unit conversion table -->
>   <units>
>     <convert from="ppm" to="ppt">1000000</convert>
>     <convert from="ppm" to="oz/ton">0.029167</convert>
>     <convert from="ppm" to="mg/kg">1</convert>
>     <convert from="ppb" to="ppm">0.001</convert>
>     <convert from="g" to="mg">1000</convert>
>     <convert from="ppm" to="g/tonne">1</convert>
>     <convert from="ppm" to="%">0.0001</convert>
>  ...
>   <xsl:variable name="cvf">
>     <xsl:value-of select="document('')//units/convert[@from=$f and @to=$t]"/>
>   </xsl:variable>