xsd schema definition problems

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EDN Admin

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Hi.
Dont know if this is the right place to post this question, but cant find any better place in this forum :)
I m having a hard time understanding how to create xsd schema definitions. I m trying to do it on my own, and not with the xsd.exe. Different validators results in different results when I try to validate xml examples from an xsd schema.
This is my xml:
<Assignments><br/>
<Assignment><br/>
<Identifier Value="99999" /><br/>
<ActivationMethod Value="Automatic" /><br/>
<ActivationTime Value="13-17-30-00" /><br/>
<Attributes><br/>
<Attribute><br/>
<Name Value="Large" /><br/>
</Attribute><br/>
<Attribute><br/>
<Name Value="Small" /><br/>
</Attribute>
</Attributes><br/>
</Assignment><br/>
<br/>
</Assignments>

This is the basic xml I have. Now I want an xsd schema that can validate this. And the ActivationTime value should match the regex that would look something like this
<span>
<pre><span style="color:#ff0000 "d{2}-d{2}-d{2}-d{2}"
[/code]



What I have now is this:
<?xml version="1.0" encoding="ISO-8859-1" ?><br/>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema <br/>
<br/>
<xs:element name="Assignments <br/>
<xs:complexType><br/>
<xs:choice minOccurs="0" maxOccurs="unbounded <br/>
<br/>
<xs:element name="Assignment <br/>
<xs:complexType><br/>
<xs:sequence><br/>
<br/>
<xs:element name="Identifier" minOccurs="0" maxOccurs="unbounded <br/>
<xs:complexType><br/>
<xs:attribute name="Value" type="xs:string" /><br/>
</xs:complexType><br/>
</xs:element><br/>
<br/>
<br/>
<xs:element name="ActivationMethod" minOccurs="0" maxOccurs="unbounded <br/>
<xs:complexType><br/>
<xs:attribute name="Value" type="xs:string" /><br/>
</xs:complexType><br/>
</xs:element><br/>
<br/>
<br/>
<xs:element name="ActivationTime" minOccurs="0" maxOccurs="unbounded <br/>
<xs:complexType><br/>
<xs:attribute name="Value" type="xs:customtype" /><br/>
</xs:complexType><br/>
</xs:element><br/>
<br/>
<br/>
</xs:sequence><br/>
</xs:complexType><br/>
</xs:element><br/>
<br/>
<br/>
</xs:choice><br/>
</xs:complexType><br/>
</xs:element><br/>
<br/>
<xs:simpleType name="ssnumber <br/>
<xs:restriction base="xs:string <br/>
<xs:length value="11" /><br/>
<xs:pattern value="d{2}-d{2}-d{2}-d{2}"/><br/>
</xs:restriction><br/>
</xs:simpleType><br/>
<br/>
<br/>
<br/>
</xs:schema>

But this generates a System.Xml.Schema.XmlSchemaValidationException saying "Type http://www.w3.org/2001/XMLSchema:ssnumber is not declared, or is not a simple type."
I ve fiddled with this for many frustrating hours now. Really hope you can help me understand this :)
Thanks alot
Lars


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