An interface can declare an event. The following example shows how to implement interface events in a class. Basically the rules are the same as when you implement any interface method or property.

CAN interface have events C#?

An interface can declare an event. The following example shows how to implement interface events in a class. Basically the rules are the same as when you implement any interface method or property.

How does events work in C#?

Events enable a class or object to notify other classes or objects when something of interest occurs. The class that sends (or raises) the event is called the publisher and the classes that receive (or handle) the event are called subscribers.

WHAT IS interface in C# with example?

Beginning with C# 8.0, an interface may define a default implementation for members. An interface may not declare instance data such as fields, auto-implemented properties, or property-like events. By using interfaces, you can, for example, include behavior from multiple sources in a class.

What are the disadvantages of interface in C#?

Disadvantage of Interface

  • The main issue with an interface is that when you add a new members to its, then you must implement those members within all of the classes which implement that interface.
  • Interfaces are slow as these required extra in-direction to find corresponding method in in the actual class.

What is delegate C#?

A delegate is a type that represents references to methods with a particular parameter list and return type. When you instantiate a delegate, you can associate its instance with any method with a compatible signature and return type. You can invoke (or call) the method through the delegate instance.

Can we raise events in interface?

No, you can not raise events in interface, Because there is no Implementation for the methods.

What is difference between delegates and events in C#?

An event is declared using the event keyword. Delegate is a function pointer. It holds the reference of one or more methods at runtime. Delegate is independent and not dependent on events.

How Use delegates and events in C#?

Accessibility event delegatename eventname; Defining an event is a two-step process. First, you need to define a delegate type that will hold the list of methods to be called when the event is fired. Next, you declare an event using the event keyword.

What is advantage of interface in C#?

One of the major advantages of Interface in C# is a better alternative to implement multiple inheritances. The interface enables the plug-and-play method. Complete Abstraction can be achieved by the implementation of Interface. Along with making our code easy to maintain, concept loose coupling can be achieved.

How interface is implemented in MVC?

How To Implement Dependency Injection In MVC Project

  1. Select “Empty” template, check MVC Checkbox below, and click “OK”.
  2. Open Solution Explorer, it will create the folder structure as shown below.
  3. Now, right click on Solution Explorer, Go to Add->Class…
  4. Select “Interface”, Name it as “ICustomerRepository.

When should I use interface in C#?

Why And When To Use Interfaces? 1) To achieve security – hide certain details and only show the important details of an object (interface). 2) C# does not support “multiple inheritance” (a class can only inherit from one base class).

What is the benefit of interface in C#?