validating individual element names?

[Developer]

Hello,

Is there a way to validate an xml fragment? For example, I'd like to know
whether this tag is legal, and if not, what's wrong:

<complexType name="CIty Grid">

Thanks.

[Martin Honnen]

Developer wrote:

Is there a way to validate an xml fragment? For example, I'd like to know
whether this tag is legal, and if not, what's wrong:

<complexType name="CIty Grid">

Even an XML fragment (not sure whether that is defined anywhere) needs
to have a matching closing tag for that start tag.

Also it is not clear what you have in mind, are you actually writing an
XML schema and want to check that? Or is that complexType just an
example of an XML element name?

If you want to create XML then you can use XmlTextWriter, it has a
method WriteName that takes a string argument and checks whether that is
an allowed XML name, if not it throws an exception.

--

Martin Honnen
http://JavaScript.FAQTs.com/

[Zafar Abbas [MSFT]]

Read up this section of MSDN describing fragment validation using
XmlValidatingReader:
http://msdn.microsoft.com/library/de...tingReader.asp

"Developer" <wa******@mapinfo.nope.com> wrote in message
news:OG**************@tk2msftngp13.phx.gbl...

Hello,

Is there a way to validate an xml fragment? For example, I'd like to know
whether this tag is legal, and if not, what's wrong:

<complexType name="CIty Grid">

Thanks.

[Developer]

Thanks for the link. Is there an msxml equivalent, since I can't use the
..Net framework?

"Zafar Abbas [MSFT]" <za****@microsoft.com> wrote in message
news:OU*************@TK2MSFTNGP12.phx.gbl...

Read up this section of MSDN describing fragment validation using
XmlValidatingReader:
http://msdn.microsoft.com/library/de...tingReader.asp
"Developer" <wa******@mapinfo.nope.com> wrote in message
news:OG**************@tk2msftngp13.phx.gbl...

Hello,

Is there a way to validate an xml fragment? For example, I'd like to know whether this tag is legal, and if not, what's wrong:

<complexType name="CIty Grid">

Thanks.

[Developer]

I'm getting a well-formed schema from a server. Since it is well-formed, it
loads into an XmlDocument. I parse the element names, and need to detect
invalid ones.
I need to do this with msxml, if possible, since I can't use the .Net
framework.

Thanks for the reply.

"Martin Honnen" <ma*******@yahoo.de> wrote in message
news:uW**************@TK2MSFTNGP12.phx.gbl...

Developer wrote:

Is there a way to validate an xml fragment? For example, I'd like to know whether this tag is legal, and if not, what's wrong:

<complexType name="CIty Grid">

Even an XML fragment (not sure whether that is defined anywhere) needs
to have a matching closing tag for that start tag.

Also it is not clear what you have in mind, are you actually writing an
XML schema and want to check that? Or is that complexType just an
example of an XML element name?

If you want to create XML then you can use XmlTextWriter, it has a
method WriteName that takes a string argument and checks whether that is
an allowed XML name, if not it throws an exception.

--

Martin Honnen
http://JavaScript.FAQTs.com/

[Martin Honnen]

Developer wrote:

I'm getting a well-formed schema from a server. Since it is well-formed, it
loads into an XmlDocument. I parse the element names, and need to detect
invalid ones.
I need to do this with msxml, if possible, since I can't use the .Net
framework.

Yes, you can validate schemas by loading them into a schema cache, here
is an example:

var xmlSchemaCache = new ActiveXObject('Msxml2.XMLSchemaCache.4.0');
try {
xmlSchemaCache.add('', 'test20040809Xsd.xml');
}
catch (e) {
alert(e.message);
}

If the example schema test20040809Xsd.xml is as follows:

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema
xmlns:xs="http://www.w3.org/2001/XMLSchema"
version="1.0">

<xs:element name="element name" type="xs:string" />

</xs:schema>

then the error message is

PathToFile/javascript/test20040809Xsd.xml#/schema[1]/element[position()
= 1 and @name = 'element name']
Error parsing 'element name' as NCName datatype.
A name contained an invalid character.
--

Martin Honnen
http://JavaScript.FAQTs.com/

[Developer]

Thank you, Martin, I discovered that technique. Unfortunately, it is too
strict for what I need to do.
For example, it gives me an error on something like this:
<xsd:import namespace="http://www.opengis.net/gml"
schemaLocation="http://www.opengis.net/namespaces/gml/core/feature.xsd"/>
For my purposes, I don't care about that error, and once that problem is
detected, processing stops. An invalid name in a start tag, however, is
something I would like to know about.
So, I'm looking for a more granular approach: is this element name valid?
Is this start tag valid? This end tag?

Thanks again.
"Martin Honnen" <ma*******@yahoo.de> wrote in message
news:ux*************@TK2MSFTNGP09.phx.gbl...

Developer wrote:

I'm getting a well-formed schema from a server. Since it is well-formed, it loads into an XmlDocument. I parse the element names, and need to detect invalid ones.
I need to do this with msxml, if possible, since I can't use the .Net
framework.

Yes, you can validate schemas by loading them into a schema cache, here
is an example:

var xmlSchemaCache = new ActiveXObject('Msxml2.XMLSchemaCache.4.0');
try {
xmlSchemaCache.add('', 'test20040809Xsd.xml');
}
catch (e) {
alert(e.message);
}

If the example schema test20040809Xsd.xml is as follows:

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema
xmlns:xs="http://www.w3.org/2001/XMLSchema"
version="1.0">

<xs:element name="element name" type="xs:string" />

</xs:schema>

then the error message is

PathToFile/javascript/test20040809Xsd.xml#/schema[1]/element[position()
= 1 and @name = 'element name']
Error parsing 'element name' as NCName datatype.
A name contained an invalid character.
--

Martin Honnen
http://JavaScript.FAQTs.com/

[Zafar Abbas [MSFT]]

MSXML does not let you selectively ignore validation errors. You will have
to use the .Net framework for that where you can hook up a validation event
handler and choose to proceed on the selective errors.

"Developer" <wa******@mapinfo.nope.com> wrote in message
news:%2****************@TK2MSFTNGP11.phx.gbl...

Thank you, Martin, I discovered that technique. Unfortunately, it is too
strict for what I need to do.
For example, it gives me an error on something like this:
<xsd:import namespace="http://www.opengis.net/gml"
schemaLocation="http://www.opengis.net/namespaces/gml/core/feature.xsd"/>
For my purposes, I don't care about that error, and once that problem is
detected, processing stops. An invalid name in a start tag, however, is
something I would like to know about.
So, I'm looking for a more granular approach: is this element name valid?
Is this start tag valid? This end tag?

Thanks again.
"Martin Honnen" <ma*******@yahoo.de> wrote in message
news:ux*************@TK2MSFTNGP09.phx.gbl...

Developer wrote:

I'm getting a well-formed schema from a server. Since it is well-formed, it loads into an XmlDocument. I parse the element names, and need to detect invalid ones.
I need to do this with msxml, if possible, since I can't use the .Net
framework.

Yes, you can validate schemas by loading them into a schema cache, here
is an example:

var xmlSchemaCache = new ActiveXObject('Msxml2.XMLSchemaCache.4.0');
try {
xmlSchemaCache.add('', 'test20040809Xsd.xml');
}
catch (e) {
alert(e.message);
}

If the example schema test20040809Xsd.xml is as follows:

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema
xmlns:xs="http://www.w3.org/2001/XMLSchema"
version="1.0">

<xs:element name="element name" type="xs:string" />

</xs:schema>

then the error message is

PathToFile/javascript/test20040809Xsd.xml#/schema[1]/element[position()
= 1 and @name = 'element name']
Error parsing 'element name' as NCName datatype.
A name contained an invalid character.
--

Martin Honnen
http://JavaScript.FAQTs.com/

[Developer]

Thanks, Zafar, that seems to answer my question -- I can't do it with msxml
4.

"Zafar Abbas [MSFT]" <za****@microsoft.com> wrote in message
news:OL*************@TK2MSFTNGP12.phx.gbl...

MSXML does not let you selectively ignore validation errors. You will have
to use the .Net framework for that where you can hook up a validation event handler and choose to proceed on the selective errors.