As we know "WhatsApp" is a very popular messaging app, which is a mobile app. WhatsApp is the most popular application used for message and chatting all over the world.

Whereas the SOLID principles are as design principles that enable us to manage with most of the software design problems. Sir Robert C. Martin compiled these principles in the 1990s. Those principles provide us ways to move from tightly coupled code

The Culture-Info Class, Provides the information about a specific culture. That information includes the names for the culture, the writing system

Inversion of control is principal and Dependency Injection is implementation.

What is MVC Pattern and Why it is Important?

Abstract Methods and Class in C# and Similarities with Interface.

The Interfaces in C# are provided as a replacement of multiple inheritances.

A delegate in C# is similar to a function pointer in C or C++. Using a delegate allows the programmer to encapsulate a reference to a method inside a delegate object.

OOP is basically a programming style that involves the concept of objects and class.We can also say that OOP is an approach to a problem involving objects.

What is Oop's ? Uses and importance of Oop's . and why Oop's are getting a easy functionality in the applications for Developers ?.