XmlSerializer constructors and pre-generated serializers

Hi,
 
I have a pre-generated serializer assembly loaded in the GAC.

When I have

XmlSerializer serializer = new XmlSerializer(typeof("myType"));
Then the pre-generated assembly is loaded and used.

However, if I have:
string namespace = myNameSpace;
XmlSerializer serializer = new XmlSerializer(typeof("myType"), namespace);

OR

XmlRootAttribute root = myXmlRoot;

XmlSerializer serializer = new XmlSerializer(typeof("myType"), root);

Then .net is generating temporary assemblies and not loading the one I have in the GAC.


Is there a way to use these overloaded XmlSerializer constructors and force .net to use the existing serializer assembly from the GAC?

Thanks!