Difference between delegates and events in C#

In this article, we will understand the difference between delegates and events in C#.

Delegate

• It can be declared using the "delegate" keyword.

• It is a function pointer.

• It holds a reference to one or more methods at runtime.

• It is an independent keyword.

• It does not depend on events.

• It contains Combine() and Remove() methods which helps in adding methods to the call list middle.

• It can be passed as a parameter to a method.

• The "=" operator can be used to assign a single method.

• The "=" operator can be used to assign multiple methods to a delegate.

Events

• can be declared using the "event" keyword.

• It can be defined as a notification mechanism that relies on delegation.

• It depends on the commission.

• It cannot be created without a delegate.

• It can be understood as a wrapper for delegate instances.

• This helps prevent users of the delegate from resetting the delegate and its call list.

It only allows adding or removing targets from the call list.

• The "EventInfo" class checks for events and helps bind event handlers.

• These handlers include methods such as AddEventHandler() and RemoveEventHandler(), which help add and remove methods to the call list respectively.

• Events can be raised but cannot be passed as parameters to methods.

• The "=" operator cannot be used with events.

• The "=" and "-=" operators can be used with events to add or remove event handlers respectively.

• These methods will internally call things like AddEventHandler and Delete EventHandler.

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