Validating an XML document with an XSD

[simonm]

I'm new to XML.

I have created an XML document that references an XSD doucment. How do I validate the XML document according to the rules defined in the XSD? I simply want to know if it complies...

[mendhak]

You'll most likely need to do it through code. What language are you programming in?

If you just want to check if the document is valid against a schema, you can use this online validator:

http://apps.gotdotnet.com/xmltools/xsdvalidator/

(ASP.NET/VB.NET CodeBehind)

[simonm]

VB6 ideally...

[mendhak]

Hmm... I don't know how to do this in VB6, only in VB.NET.

But see if this link helps, it's got code later.

http://www.developerfusion.com/show/2386/

[MartinLiss]

See my response in this thread.

[simonm]

Martin Liss
I have tried the code that you posted in your linked thread but I still have a problem.


When I run the following line of code:

oxmlSchema.Add "", strSchemaFile

I get the following error:

Incorrect definition for the root element in schema.

I know my schema is valid because it validates here.

There is one difference I should mention, I had to define my schema object as: MSXML2.XMLSchemaCache30
This is because I get the following run time error when I attempt to instantiate an object of type: MSXML2.XMLSchemaCache40:

Unable to create ActiveX object

Any thoughts?

[MartinLiss]

You need to be using MSXML4 which if you don't have you can download from MicroSoft. Once you add a reference to it in your project you can refer to MSXML2.XMLSchemaCache40.

[simonm]

Martin Liss

Thanks for your advice. I have downloaded MSXML4 (SP2).

Now it works fine!