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Hy,
I understand that attribute programming is used to add metadata to the code,
but since they are implemented with a class and we can extend that class, we
should be able to do any normal class thing with attributes like:

-Have methods
-Use any kind of code in the constructor and the methods (ex. Use a
MessageBox)

But the run time will not execute a MessageBox in the constructor?? why?
Where is it defiened that and attribute can only have fields (properties)
and that the constructor is used only to init these
fields....???

James