XSLT HTML Validation

[Trevor Oakley]

I am producing HTML from XslTransform (C#) and the HTML does not
validate, see http://www.redburg.co.uk/mira/mira415_ev_wh_ch.html as
an example.

I am using the following XSLT code:

<?xml version="1.0"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

<xsl:output method="html" version="4.01"/>
<xsl:output doctype-system="http://www.w3.org/TR/html4/strict.dtd" />
<xsl:output doctype-public="-//W3C//DTD HTML 4.01//EN"/>

Are there any URL's giving more details on xsl and html and how the
HTML can validate after being created from XslTransform.

[Oleg Tkachenko [MVP]]

Trevor Oakley wrote:

I am producing HTML from XslTransform (C#) and the HTML does not
validate, see http://www.redburg.co.uk/mira/mira415_ev_wh_ch.html as
an example.

What do you mean "does not validate" ? Basically in XSLT resulting
document never gets validated, it's stylesheet author's responsibility
to output valid result.

--
Oleg Tkachenko [XML MVP]
http://blog.tkachenko.com

[Trevor Oakley]

I am referring to W3C validation of HTML. My output from the XML/XSLT is
HTML but the doctype is absent which causes a failed validation.
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[Oleg Tkachenko [MVP]]

Trevor Oakley wrote:

I am referring to W3C validation of HTML. My output from the XML/XSLT is
HTML but the doctype is absent which causes a failed validation.

Aha. Most likely the problem has something to do with how you run the
transformation in your C# code. Make sure you don't transform to
XmlWriter or XmlReader, because as stated at MSDN, xsl:output
instruction is ignored in such case.

--
Oleg Tkachenko [XML MVP]
http://blog.tkachenko.com

[Trevor Oakley]

My code is below. The error appears to originate from a failure to
detect encoding data by the HTML validator and it "assumes" UTF8 and
also any doctype data. I need UTF8 encoding to get the "£" working.
thisStream.Position = 0;
string xslPath = Server.MapPath("XSLName.xsl");
string htmlPath = Server.MapPath(HTMLName);

XPathDocument aXPathDocument = new XPathDocument(thisStream);
XslTransform transform = new XslTransform();

transform.Load(xslPath, resolver);
XmlTextWriter aWriter = new XmlTextWriter(htmlPath, Encoding.UTF8);

aWriter.Formatting = Formatting.Indented;
aWriter.Indentation=4;
transform.Transform(aXPathDocument,null,aWriter, resolver);
aWriter.Flush();
aWriter.Close();


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[Oleg Tkachenko [MVP]]

Trevor Oakley wrote:

My code is below. The error appears to originate from a failure to
detect encoding data by the HTML validator and it "assumes" UTF8 and
also any doctype data. I need UTF8 encoding to get the "£" working.

I wrote to you in prev mail:

Make sure you don't transform to XmlWriter or XmlReader, because as
stated at MSDN, xsl:output instruction is ignored in such case.

--
Oleg Tkachenko [XML MVP]
http://blog.tkachenko.com

[Trevor Oakley]

My transform is using XmlTextWriter not XmlWriter.

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[Yan Leshinsky]

use StreamWriter instead:
StreamWriter aWriter = new StreamWriter(htmlPath)
transform.Transform(aXPathDocument,null,aWriter, resolver);

"Trevor Oakley" <sa***@trevoroakley.com> wrote in message
news:eE**************@TK2MSFTNGP10.phx.gbl...

My transform is using XmlTextWriter not XmlWriter.

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[Trevor Oakley]

I had already got it working with StreamWriter, but my implementation
wrote the XslTransform to a MemoryStream and then to a file via
StreamWriter.

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[Oleg Tkachenko [MVP]]

Trevor Oakley wrote:

My transform is using XmlTextWriter not XmlWriter.

Hehe, XmlTextWriter is an implementation of XmlWriter.
Use StreamWriter instead.

--
Oleg Tkachenko [XML MVP]
http://blog.tkachenko.com

[Oleg Tkachenko [MVP]]

Trevor Oakley wrote:

I had already got it working with StreamWriter, but my implementation
wrote the XslTransform to a MemoryStream and then to a file via
StreamWriter.

Why not directly to a file? That's pure waste of memory to have interim
MemoryStream here.

--
Oleg Tkachenko [XML MVP]
http://blog.tkachenko.com

[Trevor Oakley]

I assume XmlTextWriter has different methods and properties so it does
not follow that if XmlWriter fails to use xsl:output tags then
XmlTextWriter will also.


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[Oleg Tkachenko [MVP]]

Trevor Oakley wrote:

I assume XmlTextWriter has different methods and properties so it does
not follow that if XmlWriter fails to use xsl:output tags then
XmlTextWriter will also.

XmlWriter is abstract class. XmlTextWriter is one of implementations.
xsl:output instruction is ignored by design, when transformation is done
to any XmlWriter implementation.
You should also realize that you never output HTML when transforming to
any XmlWriter, because XmlWriter writes well-formed XML by definition
and by design.
--
Oleg Tkachenko [XML MVP]
http://blog.tkachenko.com