.NET Xsl script transform results in 'System.Object' is not defined or imported

Question

XSL noobie but uttery stuck!

I have a transform that formats a date using c# scripting function , this works fine when I am in VS 2008 and run "show xml output", the output is exactly what I want.

However , when i try to run this using code I get the error

Predefined type 'System.Object' is not defined or imported

To function to call the transform looks like this , it's pretty basic and worked before I started to use scripting

public static string RunXSLT(string xsltFile, string inputXML)
{

    XslCompiledTransform transform = new XslCompiledTransform();
    XsltSettings settings = new XsltSettings();
    settings.EnableScript = true;

    transform.Load(xsltFile, settings, null);

    StringReader sReader = new StringReader(inputXML);
    XmlTextReader xmlTextReader = new XmlTextReader(sReader);

    //Create an XmlTextWriter which outputs to memory stream
    Stream stream = new MemoryStream();
    XmlWriter xmlWriter = new XmlTextWriter(stream,> System.Text.Encoding.UTF8);


    transform.Transform(xmlTextReader, xmlWriter);

    stream.Position = 0;

    XmlDocument XmlDoc = new XmlDocument();
    XmlDoc.Load(stream);

    return XmlDoc.OuterXml;
  }

The XSL transform is this..

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"
            xmlns:msxsl="urn:schemas-microsoft-com:xslt"
            xmlns:nlbExtension="urn:nlbExtension"
            exclude-result-prefixes="msxsl nlbExtension">

<xsl:output method="xml" indent="yes"/>

<msxsl:script implements-prefix="nlbExtension" language="C#">    
<![CDATA[
  public string FormatDateTime(string xsdDateTime, string format)
  {
      DateTime date = DateTime.Parse(xsdDateTime);

      return date.ToString(format); 
   }
]]>
</msxsl:script>

<xsl:template match="/">
<urlset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9
  http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd" 
  xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"

  <xsl:for-each select="./Collection/Content" >
    <url>
      <loc>http://www.nlb.org<xsl:value-of select="./QuickLink/text()"/></loc>
      <lastmod><xsl:value-of select="./DateModified/text()" /></lastmod>
    </url>
  </xsl:for-each>      
</urlset>
</xsl:template>
</xsl:stylesheet>

Answer 1

I know this issue is very old, but maybe this helps someone who is searching for this problem.

I currently became the same compiling error but in totally different topic of C# programming.

I am using Sharp Develop 4.2 and had the same issue. For me the solution was to add "mscorlib" to the references of the project.

This error is a known issue of Microsoft, but dont know the current situation. Just found some discussions from 2010.

Somehow this reference was missing and i do not completely understand at the moment why other projects of me are working without explicit reference to mscorlib, but maybe this indeed is the bug itself ;-)

Best regards Thomas

Answer 2

Cannot reproduce (indeed, you don't actually use the extension in your xslt). I tested it, adding (to the xslt):

<xsl:value-of select="nlbExtension:FormatDateTime(.,'dd MMM yyyy')"/>

and using the input xml:

string xml = new XElement("xml", DateTime.Now).ToString();

And it worked fine (I changed to XmlConvert.ToDateTime to match xsd format, but it worked OK either way).

If there is a problem, it is in code that you aren't showing us.