C# uses the .NET framework like C does. It is also a language that is object oriented. The language is used to make various kinds of applications such as mobile applications, windows applications and web applications, and games. Like Java c# has things like loops, arrays, data types, strings, single inheritance, etc.

Object oriented programming

• .NET Framework :

• .Net General

• Keywords

• Constructors

• Classes

• Methods

• Variables :

• Arrays: Basic
  • Jagged arrays
  • useful methods

• Interfaces

• File And Directory:

References :

System namespace- (has a list of all the classes, so use search to find the class you want ) https://docs.microsoft.com/en-us/dotnet/api/system?view=netframework-4.8

Formatting, conversion,parsing etc – https://docs.microsoft.com/en-us/dotnet/standard/base-types/