Schema compile/validate problems in .NET 2.0

["Marshall, Steven (SKM)" <SMarshall@skm.com.au>]

Hello,

 

We are developing an application which is based on a complex set of XML schemas (several dozen schemas in all).  The schemas themselves are based on the ISO19139 standard, with a few extensions and changes for our purposes.  Some of the changes are done using xs:redefine.  The set of schemas validates perfectly using oXygen version 8 and the Xerces engine.  The application is developed using Visual Studio on the .NET 2.0 platform.  The problem is, when I try to load the root schema into a .NET XMLSchemaSet object and call the Compile method, it throws about 16 validation exceptions.  Some describe duplicate definitions of elements or types, some complain about invalid xs:redefine usage.  It has thrown us a bit that oXygen does not report anything, but .NET will not accept these schemas.  Even if I try to load the unmodified ISO19139 schema set, .NET reports 3 errors which again, oXygen does not.

 

Anybody know what is going on here?  Is .NET more stringent in its validation than oXygen?  Even if we ask oXygen to use the MSXML.NET engine to validate them, we get different results.  It's difficult to post any of the schema info, because there is a total of well over a megabyte of it.  Initially we'd just like to know if anyone has come up against this sort of problem, and more important, has found a way through it.

 

Thanks and regards

Steve Marshall

 

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