XMLSchemaCollection Validation with xs:choice xs:any elements

[Matthew]

I have implemented the xmlSchemaCollection object to cache commonly
used schemas, as follows:

================================================== =============================

public void SchemaValidate(XmlDocument xmlDoc, string schemaURI,
string urnNamespace)
{
if (!m_SchemaCollection.Contains(urnNamespace))
{
//add new schema to collection cache if appropriate
m_SchemaCollection.Add(urnNamespace,schemaURI);
}

//set up validating reader
XmlValidatingReader reader = new XmlValidatingReader(
xmlDoc.OuterXml,
XmlNodeType.Document,
null);

reader.Namespaces = true;
reader.Schemas.Add(m_SchemaCollection);
reader.ValidationType = ValidationType.Schema;

ValidationEventHandler EvtHandler = new
ValidationEventHandler(this.ValidationCallBack);
reader.ValidationEventHandler += EvtHandler;

while (reader.Read())
{
//iterate entire document,building up XML Doc of ValidationErrors
}
if (m_ValErrorsXmlDoc.HasChildNodes)
{
#if DEBUG
m_ValErrorsXmlDoc.Save("C:\\temp\\debug\\SchemaVal idationErrors.xml");
#endif
throw new Exception("Schema Validation Errors:" +
Environment.NewLine + schemaURI + Environment.NewLine +
m_ValErrorsXmlDoc.OuterXml);
}
}

================================================== =============================

The caching seems to work fine, but I get validation errors on xs:any
elements. The reader complains that elements contained are not
declared..
I suspect I will have problems with xs:choice elements too.

Using the validating reader without the schema collection, the input
validates OK .. ie. as follows:

================================================== =============================

public XmlDocument SchemaValidate(string XML, string RulesSchema)
{

XmlValidatingReader reader = new XmlValidatingReader(
XML,
XmlNodeType.Document,
null);

XmlReader schemaReader = new XmlTextReader(RulesSchema);

XmlSchema schema = XmlSchema.Read(schemaReader, new
ValidationEventHandler(ValidationCallBack));

reader.Schemas.Add(schema);

while (reader.Read())
{
//iterate entire document,building up XML Doc of ValidationErrors
}

XmlDocument xml = new XmlDocument();

xml.Load(reader);
//xml.LoadXml(RulesXML);

return xml;
}
================================================== =============================

I have a vague idea that this is related to serialization of the
cached schemas? but am just guessing. I have spent a day on this
already...

Any help would be much appreciated.

TIA

Matt

[Priya Lakshminarayanan [MSFT]]

Caching the XmlSchemaCollection and using this for validation should be no
different than adding the schemas directly to the XmlValidatingReader except
for an improvement in performance.

Can you send the schema and the xml samples?

Thanks,
Priya

"Matthew" <ma****************@hotmail.com> wrote in message
news:4f**************************@posting.google.c om...

I have implemented the xmlSchemaCollection object to cache commonly
used schemas, as follows:

================================================== ==========================
===
public void SchemaValidate(XmlDocument xmlDoc, string schemaURI,
string urnNamespace)
{
if (!m_SchemaCollection.Contains(urnNamespace))
{
//add new schema to collection cache if appropriate
m_SchemaCollection.Add(urnNamespace,schemaURI);
}

//set up validating reader
XmlValidatingReader reader = new XmlValidatingReader(
xmlDoc.OuterXml,
XmlNodeType.Document,
null);

reader.Namespaces = true;
reader.Schemas.Add(m_SchemaCollection);
reader.ValidationType = ValidationType.Schema;

ValidationEventHandler EvtHandler = new
ValidationEventHandler(this.ValidationCallBack);
reader.ValidationEventHandler += EvtHandler;

while (reader.Read())
{
//iterate entire document,building up XML Doc of ValidationErrors
}
if (m_ValErrorsXmlDoc.HasChildNodes)
{
#if DEBUG
m_ValErrorsXmlDoc.Save("C:\\temp\\debug\\SchemaVal idationErrors.xml");
#endif
throw new Exception("Schema Validation Errors:" +
Environment.NewLine + schemaURI + Environment.NewLine +
m_ValErrorsXmlDoc.OuterXml);
}
}

================================================== ==========================
===
The caching seems to work fine, but I get validation errors on xs:any
elements. The reader complains that elements contained are not
declared..
I suspect I will have problems with xs:choice elements too.

Using the validating reader without the schema collection, the input
validates OK .. ie. as follows:

================================================== ==========================
===
public XmlDocument SchemaValidate(string XML, string RulesSchema)
{

XmlValidatingReader reader = new XmlValidatingReader(
XML,
XmlNodeType.Document,
null);

XmlReader schemaReader = new XmlTextReader(RulesSchema);

XmlSchema schema = XmlSchema.Read(schemaReader, new
ValidationEventHandler(ValidationCallBack));

reader.Schemas.Add(schema);

while (reader.Read())
{
//iterate entire document,building up XML Doc of ValidationErrors
}

XmlDocument xml = new XmlDocument();

xml.Load(reader);
//xml.LoadXml(RulesXML);

return xml;
}
================================================== ==========================
===
I have a vague idea that this is related to serialization of the
cached schemas? but am just guessing. I have spent a day on this
already...

Any help would be much appreciated.

TIA

Matt

[Matthew]

Thanks Priyal,

I sent some source code to the online.microsoft.com address. But the
address could not be resolved. So I used a plain microsoft.com address
which went through, but I am uncertain whether or not you actually
received the documentation? Could you confirm your address for me?

Thanks,
Matthew

"Priya Lakshminarayanan [MSFT]" <pr****@online.microsoft.com> wrote in message news:<41********@news.microsoft.com>...

Caching the XmlSchemaCollection and using this for validation should be no
different than adding the schemas directly to the XmlValidatingReader except
for an improvement in performance.

Can you send the schema and the xml samples?

Thanks,
Priya

"Matthew" <ma****************@hotmail.com> wrote in message
news:4f**************************@posting.google.c om...

I have implemented the xmlSchemaCollection object to cache commonly
used schemas, as follows:

================================================== ==========================
===

public void SchemaValidate(XmlDocument xmlDoc, string schemaURI,
string urnNamespace)
{
if (!m_SchemaCollection.Contains(urnNamespace))
{
//add new schema to collection cache if appropriate
m_SchemaCollection.Add(urnNamespace,schemaURI);
}

//set up validating reader
XmlValidatingReader reader = new XmlValidatingReader(
xmlDoc.OuterXml,
XmlNodeType.Document,
null);

reader.Namespaces = true;
reader.Schemas.Add(m_SchemaCollection);
reader.ValidationType = ValidationType.Schema;

ValidationEventHandler EvtHandler = new
ValidationEventHandler(this.ValidationCallBack);
reader.ValidationEventHandler += EvtHandler;

while (reader.Read())
{
//iterate entire document,building up XML Doc of ValidationErrors
}
if (m_ValErrorsXmlDoc.HasChildNodes)
{
#if DEBUG
m_ValErrorsXmlDoc.Save("C:\\temp\\debug\\SchemaVal idationErrors.xml");
#endif
throw new Exception("Schema Validation Errors:" +
Environment.NewLine + schemaURI + Environment.NewLine +
m_ValErrorsXmlDoc.OuterXml);
}
}

================================================== ==========================
===

The caching seems to work fine, but I get validation errors on xs:any
elements. The reader complains that elements contained are not
declared..
I suspect I will have problems with xs:choice elements too.

Using the validating reader without the schema collection, the input
validates OK .. ie. as follows:

================================================== ==========================
===

public XmlDocument SchemaValidate(string XML, string RulesSchema)
{

XmlValidatingReader reader = new XmlValidatingReader(
XML,
XmlNodeType.Document,
null);

XmlReader schemaReader = new XmlTextReader(RulesSchema);

XmlSchema schema = XmlSchema.Read(schemaReader, new
ValidationEventHandler(ValidationCallBack));

reader.Schemas.Add(schema);

while (reader.Read())
{
//iterate entire document,building up XML Doc of ValidationErrors
}

XmlDocument xml = new XmlDocument();

xml.Load(reader);
//xml.LoadXml(RulesXML);

return xml;
}

================================================== ==========================
===

I have a vague idea that this is related to serialization of the
cached schemas? but am just guessing. I have spent a day on this
already...

Any help would be much appreciated.

TIA

Matt