XML schema validation

#1

Hi,

I have a XML file which I validate against a schema using the
following:

doc.Schemas.Add("", xsdSchema);
doc.Validate(new
System.Xml.Schema.ValidationEventHandler(Validatio nErrorEvent));

This works fine, and I get the correct error when changing element
names and structure.
But when the XML to validate contains a different namespace than the
one trying to validate I don't get an error, I can see why. So my
question is how do I define the schema or my code to fail validation
when a wrong NS is contained in the XML.

Samples:
<root><elements>value</elements></root> // fails when containing a
structureerror.

<root xmlns="http://random-ns"><elements>value</elements></root> //
doesn't fail.

Thanks
Simon

#2

SimonB wrote:

Quote:

I have a XML file which I validate against a schema using the
following:

doc.Schemas.Add("", xsdSchema);
doc.Validate(new
System.Xml.Schema.ValidationEventHandler(Validatio nErrorEvent));

This works fine, and I get the correct error when changing element
names and structure.
But when the XML to validate contains a different namespace than the
one trying to validate I don't get an error, I can see why. So my
question is how do I define the schema or my code to fail validation
when a wrong NS is contained in the XML.

In terms of the XML schema language it is not a validation error when no
matching schema is found for the root element namespace.
The .NET 2.0 validating parser can give you a warning if you set a
certain flag but that is not possible with the method Validate you are
using. In that case all you can do is check whether e.g.
doc.DocumentElement.NamespaceURI
is what you are looking for (e.g.
doc.DocumentElement.NamespaceURI == ""
with C# to check whether to root element is in no namespace).

If you are not using the Validate method but rather validate while
parsing the XML with XmlReader then you can use
XmlReaderSettings readerSettings = new XmlReaderSettings();
readerSettings.ValidationFlags |=
XmlSchemaValidationFlags.ReportValidationWarnings;
and you will get a warning that no matching schema for the root element
and its namespace has been found.

--

Martin Honnen --- MVP XML
http://JavaScript.FAQTs.com/

#3

SimonB wrote:

Quote:

I have a XML file which I validate against a schema using the
following:

doc.Schemas.Add("", xsdSchema);
doc.Validate(new
System.Xml.Schema.ValidationEventHandler(Validatio nErrorEvent));

This works fine, and I get the correct error when changing element
names and structure.
But when the XML to validate contains a different namespace than the
one trying to validate I don't get an error, I can see why. So my
question is how do I define the schema or my code to fail validation
when a wrong NS is contained in the XML.

In terms of the XML schema language it is not a validation error when no
matching schema is found for the root element namespace.
The .NET 2.0 validating parser can give you a warning if you set a
certain flag but that is not possible with the method Validate you are
using. In that case all you can do is check whether e.g.
doc.DocumentElement.NamespaceURI
is what you are looking for (e.g.
doc.DocumentElement.NamespaceURI == ""
with C# to check whether to root element is in no namespace).

If you are not using the Validate method but rather validate while
parsing the XML with XmlReader then you can use
XmlReaderSettings readerSettings = new XmlReaderSettings();
readerSettings.ValidationFlags |=
XmlSchemaValidationFlags.ReportValidationWarnings;
and you will get a warning that no matching schema for the root element
and its namespace has been found.

--

Martin Honnen --- MVP XML
http://JavaScript.FAQTs.com/

#4

On 13 Aug., 14:26, Martin Honnen <mahotr... (AT) yahoo (DOT) de> wrote:

Quote:

SimonB wrote:
I have a XML file which I validate against a schema using the
following:

doc.Schemas.Add("", xsdSchema);
doc.Validate(new
System.Xml.Schema.ValidationEventHandler(Validatio nErrorEvent));

This works fine, and I get the correct error when changing element
names and structure.
But when the XML to validate contains a different namespace than the
one trying to validate I don't get an error, I can see why. So my
question is how do I define the schema or my code to fail validation
when a wrong NS is contained in the XML.

In terms of the XML schema language it is not a validation error when no
matching schema is found for the root element namespace.
The .NET 2.0 validating parser can give you a warning if you set a
certain flag but that is not possible with the method Validate you are
using. In that case all you can do is check whether e.g.
doc.DocumentElement.NamespaceURI
is what you are looking for (e.g.
doc.DocumentElement.NamespaceURI == ""
with C# to check whether to root element is in no namespace).

If you are not using the Validate method but rather validate while
parsing the XML with XmlReader then you can use
XmlReaderSettings readerSettings = new XmlReaderSettings();
readerSettings.ValidationFlags |=
XmlSchemaValidationFlags.ReportValidationWarnings;
and you will get a warning that no matching schema for the root element
and its namespace has been found.

--

Martin Honnen --- MVP XML
http://JavaScript.FAQTs.com/

Just what I was looking for.
Thanks

/Simon

#5

On 13 Aug., 14:26, Martin Honnen <mahotr... (AT) yahoo (DOT) de> wrote:

Quote:

SimonB wrote:
I have a XML file which I validate against a schema using the
following:

doc.Schemas.Add("", xsdSchema);
doc.Validate(new
System.Xml.Schema.ValidationEventHandler(Validatio nErrorEvent));

This works fine, and I get the correct error when changing element
names and structure.
But when the XML to validate contains a different namespace than the
one trying to validate I don't get an error, I can see why. So my
question is how do I define the schema or my code to fail validation
when a wrong NS is contained in the XML.

In terms of the XML schema language it is not a validation error when no
matching schema is found for the root element namespace.
The .NET 2.0 validating parser can give you a warning if you set a
certain flag but that is not possible with the method Validate you are
using. In that case all you can do is check whether e.g.
doc.DocumentElement.NamespaceURI
is what you are looking for (e.g.
doc.DocumentElement.NamespaceURI == ""
with C# to check whether to root element is in no namespace).

If you are not using the Validate method but rather validate while
parsing the XML with XmlReader then you can use
XmlReaderSettings readerSettings = new XmlReaderSettings();
readerSettings.ValidationFlags |=
XmlSchemaValidationFlags.ReportValidationWarnings;
and you will get a warning that no matching schema for the root element
and its namespace has been found.

--

Martin Honnen --- MVP XML
http://JavaScript.FAQTs.com/

Just what I was looking for.
Thanks

/Simon

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

XML schema validation

Dotnet XML microsoft.public.dotnet.xml

XML schema validation - 08-13-2007 , 05:00 AM

Re: XML schema validation - 08-13-2007 , 08:26 AM

Re: XML schema validation - 08-13-2007 , 08:26 AM

Re: XML schema validation - 08-21-2007 , 04:59 AM

Re: XML schema validation - 08-21-2007 , 04:59 AM