C# Fundamentals

In this section, you’ll learn the fundamental building blocks of C# —
the core concepts that every C# developer should know before diving into advanced topics.

We’ll cover everything from variables, data types, and operators,
to control flow, loops, and exception handling.

If you’re new to C#, this is the perfect place to start.
If you’re already familiar, it’s a great refresher to strengthen your foundations.

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Table of contents

• .NET Framework vs .NET Core
• Variable
• Array
• List
• Value vs Reference Type
• ref vs out vs in
• Conditions
• Loops
• Exception