amethyste,

are you trying to dynamically set the element name based on values in
your object, i.e. if the propertyName is foo and the label is set to
range, then the serialized XML is

<foo range="..." />?

First, changing the element name is only possible if you have a fixed
set of element names, but not if propertyName can hold arbitrary
strings. XML serialization is intended to be used with
strongly-structured XML data. Therefore it works best if you can express
the XML format as an XML Schema. You can change the element names either
based on the type of the serialized object:

[XmlElement( "foo", typeof(fooType))]
[XmlElement( "bar", typeof(barType))]
public foobarType propertyName;

or by using the choice construct [0].

Second, changing the attribute name dynamically only works based on the
type of the serialized type via attaching multiple attributes. There is
no equivalent to the choice construct for attributes.

If you need to be able to by more dynamic than that you must implement
IXmlSerializable    [1].

HTH,
Christoph Schittko
MVP XML
http://weblogs.asp.net/cschittko

[0] http://www.topxml.com/xmlserializer/choice_model_groups.asp
[1] http://msdn2.microsoft.com/library/fhd7bk0a.aspx