Guys/Gals,

I have a XmlDocument object (not yet written to a physical file). This XmlDocument has a DTD specified in the <!DocType> Tag.

Can I validate this XmlDocument object against the DTD before it is physically written? And how would I go about this?

Kind regards

Adam

Wont XmlDocument.Validate help in any way.

Regards
Ankur

Take a look at these links:

  How To Validate an XML Document by Using DTD, XDR, or XSD in Visual C# .NET:
    Use the DTD to Validate the XML Document: http://support.microsoft.com/kb/307379/

  A DTD Tutorial: http://www.w3schools.com/dtd/default.asp

- Adam Kahtava [http://adam.kahtava.com]

OK, i'm a step closer now...

------------------------------------
public bool ValidateXML() {
   objXml.Validate(ValidationEventHandler);
   return true;
}
void ValidationEventHandler(object sender, ValidationEventArgs e) {
   Error = e.Message;
}
-----------------------------------
Seems to be trying to validate the XML against the DTD, but I receive the exception below now:

"The XmlSchemaSet on the document is either null or has no schemas in it. Provide schema information before calling Validate. "

But the XmlDocumentType is definately declared and implements on the objXml before the validation is attempted. Any ideas?

Thanks so far, Adam

Could you post more code?
What version of the .Net framework are you using?
Is the DTD declared in your XML file? e.g. <!DOCTYPE Product SYSTEM "Product.dtd">
Are you using an XmlValidatingReader? If so did you set the ValidationType to DTD? e.g. ValidationType.DTD;

This code snippet may be of use:

           // Validate the XML file with the DTD
            myXmlTextReader = new XmlTextReader (args[0]);
            myXmlValidatingReader = new XmlValidatingReader(myXmlTextReader);
            myXmlValidatingReader.ValidationType = ValidationType.DTD;
            Validate();

See the complete source here: http://samples.gotdotnet.com/quickst...gXML.cs&font=3

- Adam Kahtava [http://adam.kahtava.com]