Howard:
it's possible to serialize derived classes as long as you also declare the
derived type to the XmlSerializer. What type are you passing in to the
XmlSerializer constructor ?
Also, check the InnerMessage property of the exception you are catching. It
provides more information about the nature of the exception.
HTH,
Christoph Schittko
Software Architect
Mshow - a division of InterCall
P.S. I already posted this answer to your question in the newsgroup, but it
seems like the group is
having problems.
----- Original Message -----
From: "Howard Hoffman" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, June 13, 2002 2:06 PM
Subject: [ADVANCED-DOTNET] Extending XSD generated classes ...
> Is it possible to extend XSD generated classes with methods and
properties?
>
> I have a schema with around 200 complexTypes. I'd like to provide methods
> for many of them. My first approach was use XSD.exe to generate classes
> for the complexTypes (in the 'commonNamespace' namespace), to derive a new
> CS class from the XSD generated class, and to provide the methods there.
> However, that doesn't serialize. Here's a copy of my subclass :
>
> namespace commonNamespace {
> [System.Xml.Serialization.XmlTypeAttribute( Namespace="myURI",
> TypeName="Type_t")]
> public class myType : Type_t // Type_t is a class generated by XSD.exe
in
> the commonNamespace namespace
> {
> void doIt()
> {
> // execute my business logic
> }
> }
> }
>
> I have a root element in my schema that has a Type_t element in it. If my
> C# code constructs a myType, populates the relevant fields, and then
> serializes it, I get
> System.InvalidOperationException on my XmlSerializer.Serialize() call. If
I
> change my C# to populate a Type_t instead of a myType, then it works.
>
> Is there something I can do without hand-editing the generated C# code to
> make this work? It doesn't appear that you can pass XmlIncludeAttributes
> to the XmlAttributesOverrides.Add() method.
>
> Thanks in advance,
>
> Howard
>
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