Gain insights into fundamental and advanced C# programming concepts. Learn about conditional statements, loops, methods, arrays, classes, inheritance, interfaces, and delegates through practical challenges.

This course introduces you to fundamental programming concepts in C#, one of the most popular languages in the world. The highly interactive course begins with a simple Hello world program and proceeds on to cover common concepts such as conditional statements, loop statements, and methods in C#. It also reflects upon the idea of arrays as well as the power they give to the programmer to write better code. Finally, it dives deeper in order to teach about advanced concepts such as classes, inheritance, interfaces, and delegates in C# through interactive challenges and exercises.

C# for Programmers: A Practical Guide

# Introduction
Exception Handling is the main feature of ***`OOP`** Concepts*.

 Before going to know about this Exception Handling, we should know **what is an Exception?**. 

>An exception is a runtime error that occurs while executing the program. Due to this, our system may hang or something may happen to it.

# Explanation

Code that detects an error condition is said to throw an exception and code that handles the error is said to catch the exception. An exception in C# is an **object** that *encapsulates* various pieces of information about the error that occurred, such as the stack trace at the point of the exception and a descriptive error message. 
>All exception objects are instantiations of the `System.Exception` class or a *child class* of it. 

Programmers may also define their own class inheriting from `System.Exception` or some other appropriate exception class from the **.NET Framework**.


## Code Definitions for Exception Handling
- **try/catch** - Do something and catch an error, if it should occur.

- **try/catch/finally** - Do something and catch an error if it should occur, but always do the `finally`.

- **try/finally** - Do something, but always do the `finally`. Statements in the `finally` block are executed once control leaves the `try` statement.

## Types
Exceptions are caught in the order from most specific to least specific. So for example, if you try and access a file that does not exist, the CLR would look for exception handlers in the following order:

- `FileNotFoundException`
- `IOException` (base class of `FileNotFoundException`)
- `SystemException` (base class of `IOException`)
- `Exception` (base class of `SystemException`)

If the exception being thrown does not derive from or is not in the list of exceptions to catch, it is thrown up the call stack.

You've got an introduction of what exceptions are - now let's move onto their syntax and examples!

This lesson will give you an overview of what exceptions are and their types.

Introduction

Variables and Casting

Operators

Conditions

Loops

Arrays

Methods

Exception Handling

Classes

OOP in C#

Delegates

C# Exam

What are Exceptions?

Introduction