how to call non abstract method of abstract class?

Question

What is use of Non abstract methods in abstract classes and also how to consume it the same in c#.NET? No links please...........

Parveen Siwach · Answer

Abstract classes are commonly used to abstractly define the composition of an object just like an interface would. But an abstract class also allows you to define default functionality for consumers. Example: The System.IO.Stream class is abstract. It implements IDisposable . Stream.Dispose is a non-abstract method that calls the virtual Close method (not abstract but it could be in a similar type). This allows derived types to support IDispose without having to write any code for it it's already implemented by the base class. The work of Disposing is done by the Close method.