ProcessSchemaLo cation Validation schemaLocation "Not Working"

[Parsed Cheese]

After two days I am at wits end, but I am too OCD'ed to give up.
Please tell me what I have got wrong because no Validation Error is
being thrown.

The element: "<datestamp >I should fail</datestamp>"
does not conform to schema. Adding the schema to the
XmlReaderSettin gs->Schemas field at runtime does result in error being
thrown. As I read it, this step should not be neccessary as the
ProcessSchemaLo cation flag should automatically pick up the referenced
schemas in the XML file.

Note: the XML file is actually a node that will be inserted to an
existing XML file.

Below is XML file:

(
"<provenanc e xmlns=\"http://www.openarchive s.org/OAI/
2.0/provenance\"" + "\n" +
"\t" + "xmlns:xsi=\"ht tp://www.w3.org/2001/
XMLSchema-instance\"" + "\n" +
"\t" + "xsi:schemaLoca tion=\"http://
www.openarchive s.org/OAI/2.0/provenance" + "\n" +
"\t" + "http://www.openarchive s.org/OAI/2.0/
provenance.xsd\ ">" + "\n" +
"\t" + "<originDescrip tion harvestDate=
\"2002-02-02T14:10:02Z\" altered=\"true\ ">" + "\n" +
"\t" + "<baseURL>h ttp://the.oa.org</baseURL>" +
"\n" +
"\t" + "<identifier>oa i:r2.org:klik00 1</
identifier>" + "\n" +
"\t" + "<datestamp >I should fail</datestamp>" +
"\n" +
"\t" + "<metadataNames pace>http://
www.openarchive s.org/OAI/2.0/oai_dc/</metadataNamespa ce>" + "\n" +
"\t" + "\t" + "<originDescrip tion harvestDate=
\"2002-01-01T11:10:01Z\" altered=\"false \">" + "\n" +
"\t" + "\t" + "\t" + "<baseURL>h ttp://some.oa.org</
baseURL>" + "\n" +
"\t" + "\t" + "\t" +
"<identifier>oa i:r2.org:klik00 1</identifier>" + "\n" +
"\t" + "\t" + "\t" + "<datestamp>200 1-01-01</
datestamp>" + "\n" +
"\t" + "\t" + "\t" + "<metadataNames pace>http://
www.openarchive s.org/OAI/2.0/oai_dc/</metadataNamespa ce>" + "\n" +
"\t" + "\t" + "</originDescripti on>" + "\n" +
"\t" + "</originDescripti on>" + "\n" +
"\t" + "</provenance>");

Here is XML validation class:

public class XmlValidator
{

public static bool isValid;

public static void Validate(String inFile)
{
XmlReader reader = null;
XmlReaderSettin gs settings = new XmlReaderSettin gs();

settings.Valida tionType = ValidationType. Schema;
settings.Valida tionEventHandle r += new
ValidationEvent Handler(validat ionEventHandler );

settings.Valida tionFlags &=
XmlSchemaValida tionFlags.Proce ssSchemaLocatio n;
//settings.Valida tionFlags &=
XmlSchemaValida tionFlags.Proce ssInlineSchema;
settings.Valida tionFlags &=
XmlSchemaValida tionFlags.Repor tValidationWarn ings;

System.IO.Strin gReader strReader = new
System.IO.Strin gReader(inFile) ;
reader = XmlReader.Creat e(strReader, settings);

isValid = true;

while (reader.Read())
{
}

}

static void validationEvent Handler(object sender,
ValidationEvent Args args)
{
isValid = false;
}
}

Thanks in advance for granting peace to my mind.

Jim

[Parsed Cheese]

Well I get what I deserve for blindly copying code.

The offending lines were:

settings.Valida tionFlags &=
XmlSchemaValida tionFlags.Proce ssSchemaLocatio n;
settings.Valida tionFlags &=
XmlSchemaValida tionFlags.Proce ssInlineSchema;
settings.Valida tionFlags &=
XmlSchemaValida tionFlags.Repor tValidationWarn ings;

The fix was to replace those lines with:

settings.Valida tionFlags |=
XmlSchemaValida tionFlags.Proce ssSchemaLocatio n
|
XmlSchemaValida tionFlags.Proce ssInlineSchema
|
XmlSchemaValida tionFlags.Repor tValidationWarn ings;

Anyone with experience with compound assignment operators want to
explain?