.Net SvcUtil: attributes must be optional

Posted by Michel van Engelen on Stack Overflow See other posts from Stack Overflow or by Michel van Engelen
Published on 2010-05-31T07:39:03Z Indexed on 2010/05/31 7:42 UTC
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Hi,

I'm trying to generate C# code classes with SvcUtil.exe instead of Xsd.exe. The latter is giving me some problems.

Command line:

SvcUtil.exe myschema.xsd /dconly /ser:XmlSerializer

Several SvcUtil problems are described and solved here: http://blog.shutupandcode.net/?p=761

One problem I can't solve is this one: Error: Type 'DatafieldDescription' in namespace '' cannot be imported. Attributes must be optional and from namespace 'http://schemas.microsoft.com/2003/10/Seri alization/'. Either change the schema so that the types can map to data contract types or use ImportXmlType or use a different serializer. '

I changed

<xs:attribute name="Order" use="required">

to

<xs:attribute name="Order" use="optional">

and

<xs:attribute name="Order">

But the error remains. Is it possible to use attributes, or do I have to delete them all (in that case, this excercition is over)?

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