WHAT ARE EVENTS AND DELEGATE?

Varun Agrawal

Total Post:159

Points:795
Posted by  Varun Agrawal
OOPS 
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  1. Varun Agrawal

    Post:159

    Points:795
    What are events and delegate?

    An event is delivered to an object by means of a call to amethod in that object.  An event isdelegate type class member that is used by the object or class and it provide anotification to other objects that an event has occurred.

    We define the event as

    modifiers event type NameOfEvent

    delegate

    Delegates are similar to object references, but are used to reference methods instead of objects. The type of a delegate is type or signature of the method rather than class. Hence a delegate has three properties:

    ·         The type or signature of the method that the delegate can point to

    ·         The delegate reference which can we used to reference a method

    ·         The actual method referenced by the delegate

  1. Varun Agrawal

    Post:159

    Points:795
    What are events and delegate?

    An event is a message sent by a control to notify the occurrence of an action. However it is not known which object receives the event. For this reason, .NET provides a special type called Delegate which acts as an intermediary between the sender object and receiver object.

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