C# - Casting & Type Conversion

Type conversion is converting one type of data to another type. It is also known as Type Casting. In C#, type casting has two forms:

Implicit type conversion – These conversions are performed by C# in a type-safe manner. For example, are conversions from smaller to larger integral types and conversions from derived classes to base classes.(সফটওয়ারের দায়িত্তে)
Explicit type conversion – These conversions are done explicitly by users using the pre-defined functions. Explicit conversions require a cast operator.(নিজের দায়িত্তে)

C# - Attribute

Attribute is nothing more than a class that inherit from the base class Attribute.

C# - Operator Overloading

In an object oriented programming language like C#, operator overloading provides a much more natural way of implementing the operations on custom types.Suppose that we have a class created for Complex number and we want to perform all the arithmetic operations on this type. One way to do this is by having functions like Add, Subtract inside the class and have the functionality. Another way is to actually have the overloaded version of operators to act on this type.

C# - Interface

What an interface is?

In the real world, an interface means a medium to interact with something. To be precise, it's a point where two systems, subjects, organizations and so on meet and interact. There are a few rules for the interaction to be done. Suppose you are going for an interview of Programmer Profile. The interview is only possible if the interviewer and you speak the same language. Moreover, you and the interviewer have the same skill set of programming languages to discuss upon.

C# - Abstract Class

What is an Abstract Class?

An abstract class is a special kind of class that has no implementation. It cannot be instantiated. Its implementation logic is provided by the classes that derive from it. It can have both abstract as well as non-abstract methods. It is not compulsory to have only abstract methods in an abstract class. We can also have an abstract class with only non-abstract methods.