H1. Delegates and Events

Delegate

What is a class in .NET that encapsulates a method?

Delegate

What is a reference type data type that holds a reference method?

Delegate

What is the class that can call any method as long as its signature matches?

delegate keyword

What keyword is used in declaring a delegate on a class?

<access modifier> delegate <return type> <delegate-name> (<parameters>);

What is the syntax of Delegate?

new keyword

What keyword is needed in order to instantiate the delegate?

new keyword

Which is associated with the method and supposed to refer on the object?

Generic Delegates

What delegates are not bound to any specific type?

Generic Delegates

What can reference a method that returns and takes parameters of different types?

<access-modifier> <delegate keyword> <X return type> <delegate-varname>(X keyword, args);

What is the syntax of Generic Delegate?

[delegates] and [interfaces]

Even if both […] and […] include the declaration, they still have differences.

Delegates

Which refers to having no implementation, they are safe callbacks and only have a declaration?

Delegates

Which can reference any method of a class that provides arguments and return types?

Delegates

Which are used if a class needs more than one implementation of the method?

Delegates

Which are faster to execute but slower to get?

Interfaces

A class that implements […] can implement all the methods associated with it.

Interfaces

Which are used to allow extending some of the objects’ functionality?

Interfaces

Which can implement a method only once?

Interfaces

Which are slower in executing but faster to get?

Events

In C#.NET, what are the usual task initiators?

Event

What is a member of a class that is fired whenever a specific action takes place?

Event Handlers

What do you call the methods that are invoked when an event occurs?

Delegate

What should be declared first before the event declaration?

<access_modifier> <event_keyword> <delegate_name> <event_name>;

What is the syntax of Event Declaration?

event_name += delegate_instance;

What is the syntax for adding an event?

add and remove

Which accessors are similar to get and set accessors?

add accessor

Which is used to register a new subscription to an event?

remove accessor

Which is used to unregister a subscription to an event?