an object representing the one selected
Text
save space on a form
TabPage
Text
MenuStrip
ColorDialog
CheckChanged( )
encapsulation
inheritance
polymorphism
encapsulation
classes
.dll
containment
partial
public
overridden method
interface
protected
add a reference to the base class
avoid fully qualifying references to class members
no implementation details are included
tags the method as capable of being overridden.
interfaces
polymorphism