Interface In C#

You must first know the Inheritance. Because this very important concept in C# and I assume that you know it. Inheritance is analogy to parent and child relationship.

Then we go to the concept of Multiple Inheritance this is just to explain the Interface. Multiple inheritance means we have to inherit from many classes that means a child has to inherit from many parents. This is practically impossible idea because a child does not have many parents. To overcome this idea Interface is introduced in C#.

Actually Interface is an alternative to multiple inheritance. In some languages multiple inheritance is allowed.

Please walkthrough this article
http://www.c-sharpcorner.com/UploadFile/rmcochran/csharp_interrfaces03052006095933AM/csharp_interrfaces.aspx


Thanks
Sandeep

you need to check this
http://msdn.microsoft.com/en-us/library/27db6csx(v=vs.80).aspx