How do I troubleshoot this exception when creating an XmlSerializer object?

Question

I downloaded the XML Schema for XML Schemas at http://www.w3.org/2001/XMLSchema.xsd.

I then used XSD.EXE to create a class from the downloaded file. I called the class schema.cs.

I then executed this line of code:

XmlSerializer serializer = new XmlSerializer(typeof(schema));

and got this error:

The XML element 'annotation' from namespace 'http://www.w3.org/2001/XMLSchema' is already present in the current scope.

How do I find the duplicate element and fix it, without breaking the schema?

It may be that the exception has a line and position number. Could you add these? — Pieter van Ginkel, Oct 27 '10 at 17:26
@Pieter: The exception didn't include a line number, and neither did the inner exception. — Robert Harvey, Oct 27 '10 at 17:35
And you have no hint at all what annotation throws? I have looked at the XSD and it looks like there are many scopes where there are multiple annotations. — Pieter van Ginkel, Oct 27 '10 at 17:38
@Pieter: No I don't. That's the basic problem, is visibility. — Robert Harvey, Oct 27 '10 at 17:42
@0xA3: I'm trying to read [another XML schema](http://www.spiraltechinc.com/Tmats/Tmats_02-2009.xsd) and analyze it. — Robert Harvey, Oct 27 '10 at 17:47
@eschneider: It's big (about 1400 lines of code). It's easy enough to generate. — Robert Harvey, Oct 27 '10 at 17:47

score 1 · Answer 1 · 2010-10-27T18:52:12.140

1

I think the generated class has flaws.

I changed the attribute to fix the first error but a new error is discovered.

/// <remarks/>
//[System.Xml.Serialization.XmlElementAttribute("annotation", typeof(annotation))]
[System.Xml.Serialization.XmlElementAttribute("Items", typeof(annotation))]
[System.Xml.Serialization.XmlElementAttribute("import", typeof(import))]
[System.Xml.Serialization.XmlElementAttribute("include", typeof(include))]
[System.Xml.Serialization.XmlElementAttribute("redefine", typeof(redefine))]
public openAttrs[] Items {
    get {
        return this.itemsField;
    }
    set {
        this.itemsField = value;
    }
}

edited Oct 27 '10 at 18:52

answered Oct 27 '10 at 18:36

I did use an earlier version of XSD, so I ran it again using the version you are referencing, and did a file compare. The only differences between the two files were the CompilerGenerated attribute versions, so I didn't bother to test the new file. Weird. I'll test the new file and let you know. – Robert Harvey Oct 27 '10 at 18:39
I think the problem still exists (Break on all errors was off). I think the generated class is bad though... – Oct 27 '10 at 18:41
Yeah, it threw the same exception. – Robert Harvey Oct 27 '10 at 18:47

score 0 · Answer 2 · answered Oct 27 '10 at 17:27

0

Because the annotate elements are just comments, you could try simply filtering all of these out. Just first load the XML into an XDocument and remove all annotate elements.

answered Oct 27 '10 at 17:27

Pieter van Ginkel

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Unfortunately, I need the comments. – Robert Harvey Oct 27 '10 at 17:30
Seen my comment? Do you have line/position numbers of the exception? – Pieter van Ginkel Oct 27 '10 at 17:32

How do I troubleshoot this exception when creating an XmlSerializer object?

2 Answers2