E

E

encapsulation In component programming, separating the implementation of a component from the interface. Only the public interface of a component is made accessible to the rest of the application. Component data should never be accessible to outside callers.

event A notification raised by a control or component that a specified condition has occurred.

event handler A method that is executed when a particular event is raised.

exception Any class that derives from System.Exception. Exceptions are thrown in response to run-time errors. See also throwing.

exception handling The process of dealing with unusual occurrences within code so that it does not cause the program to crash or lose data.

explicit conversion A conversion of one type to another that cannot be performed automatically. An explicit conversion usually presents some danger of a failed conversion or a loss of data.

extender provider A specialized type of control that provides design time properties to other controls. ErrorProvider and HelpProvider are examples of extender providers.