i tried overriding the clear() subroutine for system.collection.collectionbase class

it gives me an error message :-

An unhandled exception of type 'System.TypeLoadException' occurred in Structure Demo.exe

Additional information: Declaration referenced in a method implementation can not be a final method. Type: Structure_Demo.CustomerCollection. Assembly: Clear.




i tried overriding other functions for other classes and it work. but i dont understand why it doesnt work for the CollectionBase class
does that mean there are problems with this specific class?
can anyone plz help??

Jeffrey