Interface in c#

It is left to the class that implements the interface by providing implementation for all the members of the interface. Interface makes it easy to maintain a program. NET allows you to have a single class in the list of parents , therefore supporting single inheritance, but you are free to implement as many interfaces as you wish.

Understanding the differences between an abstract class and interface is key to designing loosely coupled and extensible applications. An interface is a specification for a set of class members, not an .

It can neither be directly instantiated as an object, nor can data members be defined. So, an interface is nothing but a collection of method and property declarations. How to create interfaces and implement them in classes. The following defines a . It explains interfaces in depth. Using interfaces as in Listing is useful because it allows you to define little pockets of functionality.

Any implementing classes can provide the code to fulfill the interface contract.

However, the real power of interfaces comes from inheritance, as illustrated in Listing 2. This course covers interfaces from ground zero (What are interfaces ?) and works up to advanced abstraction. It can have abstract as well as non-abstract methods. In an application I there may be an instance where you want to get a list of all classes that implement a specific interface and do something with them. In my instance I needed to retrieve a list of Entity Classes. In the application, all Domain Entity classes implement a common interface of IDomainEntity.

This makes the mapping easy and intuitive to use because making a remote procedure call is no different from making a . It contains a collection of. It means a class that implement an interface is bound to implements all its members. I need to create an interface that specifies that the constructor for any implementing class has to take specific arguments.

Right after posting, I realized that I . In that article were examples of interfaces that enforced the inclusion of methods and properties in the classes that implemented them. You would like to be able to ask the object if it supports the interface , in order to then invoke the appropriate methods. It is the responsibility of the first concrete class that has that abstract class as an . They are often mentioned in the same breath as named arguments but are two completely different concepts.

So if a class is implementing a interface it says to the outer worl that it provides specific behavior.

CreateModule( Guid moduleGui out``ICSModule module);. If a class implements a interface. Developing an IPayable Hierarchy To build an application that can determine payments for employees and invoices alike, we first create an interface named IPayable. We provide an infrequently .