Hi to All,

Please define me the interface concept in oop and where can I use it, and difference between class and interface.


Does interface improved our application performance (in the mean of reduction of code)?



Please help me.

Thanks.

Interface is a contract which guarantees client(consumer) how your classes or structs are going to behave.They consists only method skeleton and no implementations.

->Interface can be used when you cannot inherit from a class like for structs.
->More than one interface can be inherited thus supporting multiple inheritance in .Net
->Interface helps in defining a common functionality across multiple types.
->Used in plug-n-play architecture.

& visit http://csharptopicwiseques.blogspot....face-ques.html for more detail

__________________
Always,
Hovik Melkomian.

Hi,

Thanks for reply Sir melvik,

But I am little confused that what does that mean?

"Interface can be used when you cannot inherit from a class like for structs"

Pleas define me,

Thanks.

When any type is loaded by CLR then all method of the class and all inherited public methods and interfaces implementation methods are added to method table.
For example i have created a class Test which is implementing one interface IFormattable and it has only one method ToString().
http://bimbim.in/post/2010/09/04/Exp...thod-in-c.aspx

An Interface is a reference type and it contains only abstract members such as Events, Methods, Properties etc. It contain only declaration for its members and implementation defined as separate entities from classes.

http://net-informations.com/faq/net/interface.htm

lee.

Interface is A boundary across which two independent systems meet and act on or communicate with each other. In computer technology, there are several types of interfaces.

user interface - the keyboard, mouse, menus of a computer system. The user interface allows the user to communicate with the operating system. Also see GUI.
software interface - the languages and codes that the applications use to communicate with each other and with the hardware.
hardware interface - the wires, plugs and sockets that hardware devices use to communicate with each other.
To connect with or interact with by means of an interface.