XML / XSL

1. Remove the targetNamespace attribute - this is the namespace that the elements your defining in the schema (Drive, folder
2. You need to change the default namespace declaration to be a named namespace:
   
   

   <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">

   
   
   and prefix all elements that come from the XML Schema namespace with the namespace prefix you choose (xs in this case)

<xs:simpleType>
  <xs:restriction baseType="xs:string">
    <xs:pattern value="[A-Za-z][A-Za-z0-9_]*"/>
  </xs:restriction>
</xs:simpleType>

<xsl:for-each select="Products/Item">
<xsl:variable name="colorname" select="@ItemColor"/>
   <tr>
      <td><xsl:value-of select="$colorname"/></td>
      <td><xsl:value-of select="//Color[@ColorName=$colorname]/@ColorId"/></td>
   </tr>
</xsl:for-each>

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output method="html"/>

<xsl:template match="/">
<xsl:for-each select="//Products/Item">
<tr>
<td><xsl:value-of select="@ItemColor" /></td>
<td><xsl:value-of select="//Desciptions/Color[@ColorName=current()/@ItemColor]/@ColorId"/></td>
</tr>
</xsl:for-each>
</xsl:template>

</xsl:stylesheet>

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output method="html"/>

<xsl:key name="color-name-to-id" match="//Desciptions/Color/@ColorId" use="../@ColorName"/>

<xsl:template match="/">
<xsl:for-each select="//Products/Item">
<tr>
<td><xsl:value-of select="@ItemColor" /></td>
<td><xsl:value-of select="key('color-name-to-id', @ItemColor)"/></td>
</tr>
</xsl:for-each>
</xsl:template>

</xsl:stylesheet>

<?xml version="1.0" encoding="utf-8" ?>
<bookstore>
  <book genre="autobiography" publicationdate="1981" ISBN="1-861003-11-0">
    <title>The Autobiography of Benjamin Franklin</title>
    <author>
      <first-name>Benjamin</first-name>
      <last-name>Franklin</last-name>
    </author>
    <price>8.99</price>
  </book>
  <book genre="novel" publicationdate="1967" ISBN="0-201-63361-2">
    <title>The Confidence Man</title>
    <author>
      <first-name>Herman</first-name>
      <last-name>Melville</last-name>
    </author>
    <price>11.99</price>
  </book>
  <book genre="philosophy" publicationdate="1991" ISBN="1-861001-57-6">
    <title>The Gorgias</title>
    <author>
      <name>Plato</name>
    </author>
    <price>9.99</price>
  </book>
</bookstore>

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:output="urn:output">

  <xsl:template match="bookstore">
    <bookstore>
      <xsl:for-each select="book">
        <book>
          <xsl:copy-of select="node()"/>
          <new-price>
            <xsl:value-of select="output:SaveOutput(@genre, node())"/>
          </new-price>
        </book>
      </xsl:for-each>
    </bookstore>
  </xsl:template>
</xsl:stylesheet>

private void ExtensionTest()
{
            XslCompiledTransform xslt = new XslCompiledTransform();
            xslt.Load("extension.xslt");
            XsltArgumentList xslArg = new XsltArgumentList();

            OutputSaver obj = new OutputSaver();
            xslArg.AddExtensionObject("urn:output", obj);
            using (XmlWriter w = XmlWriter.Create("output.xml"))
            {
                xslt.Transform("books.xml", xslArg, w);
            }
}
 public class OutputSaver
 {
        public void SaveOutput(string fileName, string node)
        {
            StreamWriter s = new StreamWriter(fileName);
            s.Write(node);
            s.Flush();
        }
 }

?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:msxsl="urn:schemas-microsoft-com:xslt" exclude-result-prefixes="msxsl"
    xmlns:user="urn:myscripts"
>
    <xsl:output method="xml" indent="yes"/>

  <msxsl:script language="C#" implements-prefix="user">
    <![CDATA[
    public void SaveOutput(string fileName)
    {
    
      System.IO.TextWriter t = new System.IO.StreamWriter(fileName);
      t.Write("got it");
      t.Flush();
    }
    ]]>
  </msxsl:script>


  <xsl:template match="@* | node()">
    <xsl:value-of select="user:SaveOutput('d:\testing.txt')"/>
        
    </xsl:template>
</xsl:stylesheet>

private void ScriptTest()
{
    XsltSettings settings = new XsltSettings();
    settings.EnableScript = true;

    XslCompiledTransform trs = new XslCompiledTransform();
    trs.Load("Custom.xslt", settings, new XmlUrlResolver());
    StreamWriter writer = new StreamWriter(@"e:\samples.txt");
    trs.Transform(@"E:\\9.xml", null, writer);

    writer.Flush();
    writer.Close();
}

<xsl:sort select="./*[name()=$SortName]"/>

<xsl:sort select="./@*[name()=$SortName]"/>