Introduction to Object Oriented Programming Concepts (OOPS) in C#.net
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Introduction to Object Oriented Programming Concepts (OOPS) in C#.net

What is OOP? OOP is a design philosophy. It stands for Object Oriented Programming. Object-Oriented Programming (OOP) uses a different set of programming languages than old procedural programming languages (C, Pascal, etc.). Everything inOOP is grouped as self sustainable "objects". Hence, you gain re-usability by means of four main object-oriented programming concepts. In order to clearly understand the object orientation, let’s take your “hand” as an example. The “hand” is a class. Your body has two objects of type hand, named left hand and right hand. Their main functions are controlled/ managed by a set of electrical signals sent through your shoulders (through an interface). So the shoulder is an interface which your body uses to interact with your hands. The hand is a well architected class. The hand is being re-used to create the left hand and the right hand by slightly changing the properties of it. What is an Object? An object can be considered a "thing" that can perform a set of related activities. The set of activities that the object performs defines the object's behavior. For example, the hand can grip something or a Student (object) can give the name or address.
Difference between Ref and Out Keyword in C#.net
Posted inC#.Net OOPS

Difference between Ref and Out Keyword in C#.net

Introduction Both the parameters passed by reference, While for the Ref Parameter you need to initialize it before passing to the function and out parameter you do not need to initialize before passing to function. you need to assign values into these parameter before returning to the function. Ref (initialize the variable) int getal = 0; Fun_RefTest(ref getal); Out (no need to initialize the variable) int getal; Fun_OutTest(out getal); The out and the ref parameters are used to return values in the same variables, that you pass an an argument of a method. These both parameters are very useful when your method needs to return more than one values.
Introduction of Static Keyword in C#.net
Posted inC#.Net OOPS

Introduction of Static Keyword in C#.net

Static Class : A static class is you can say same as the non-static class, but there is one difference them is a static class can't be instantiated. In other words, you cannot use the "new" keyword to create a instance variable of the class type. As there is no instance variable, you can access the members of a static class by using the name of the class itself. Static classes and it's class members are used to create data and functions that can be accessed without creating an instance of the class. Static class members can be used to separate data and behavior that is independent of any object identity: the data and functions do not change regardless of what happens to the object. Static classes can be used when data or behavior is not present in the class that depends on object identity. Static classes are loaded automatically by the .NET Framework CLR when that program or namespace containing the class is loaded. The main features of a static class are: static classes can only contain static members. static classes can not be instantiated. static classes are sealed and therefore cannot be inherited.