C# Course

C# is Microsoft's flagship language for the .NET platform — everything from desktop and web backends to Unity games runs on it. It sits close to Java in spirit (statically typed, garbage collected, thoroughly object-oriented) but smooths over some of Java's rougher edges with features like properties, built-in nullable types, and a terser syntax for common patterns. This course takes you from your first Console.WriteLine up through the object-oriented features and error handling you need for real programs.

What you'll learn

The first half covers the fundamentals every C# program is built from: variables, operators, strings, conditionals, loops, and the array and list types you'll reach for constantly. The second half moves into object-oriented programming — methods, classes and objects, then properties and constructors, which are C#'s answer to the "anyone can overwrite a public field" problem that shows up the moment you start bundling data into classes. From there it's inheritance and interfaces, the two ways C# lets one type build on or promise to behave like another, and finally exception handling, so your programs can fail gracefully instead of crashing outright.

Every lesson runs real code and shows you its exact console output, since C# doesn't execute live in a browser the way HTML or JavaScript can — read each example closely, then try it yourself in a .NET project or an online C# compiler.

Lessons

  1. Introduction
  2. Variables & Data Types
  3. Operators
  4. Strings
  5. Conditionals
  6. Loops
  7. Arrays & Lists
  8. Methods
  9. Classes & Objects
  10. Properties & Constructors
  11. Inheritance & Interfaces
  12. Exception Handling
Where to start: begin with Introduction and work through in order — later lessons lean on earlier ones without re-explaining them. If you've already written Java or a similar object-oriented language, lessons 09 through 12 (Classes & Objects through Exception Handling) are where C#'s own personality really shows up.