Complete C# Masterclass

Logical Operators

Logical Operators in C#

Datatype Bool

If Statements

OR and NOT operators

AND operator

Relational operators

The Else Keyword

DataType Bool and Conditional Statements

Else If Keyword and Order of Importance

Control Structures: If, Else, and Else If in C#

Equality Operator and not equal

Nested If Statements

Understanding the Scope of a variable

Challenge Clubbing or no Clubbing

One Line If Statements

The Switch Statement - Keywords Switch

Switch or If - which to choose

CHEATSHEET - Decision Makking in C#

Using the Switch Statement

Our Little Quiz App

Using String Methods Trim and ToLower

Incrementing and Pre-Incrementing

Decrementing and Modulo Operator

How to use try parse

Advanced Conditionals and Loops

How to generate a random number

ADVANCED EXERCISE: Building a Conditional-Based Calculator

Loops Overview

For Loop

For Loop - Count down challenge

Escape Characters r and n as well as Thread.Sleep

CHALLENGE: Rocket Landing Simulation

Landing a Rocket with a for loop

While loop and using it as a counter

While loops where it really shines

Guess the Number Challenge Solution

Working with While Loops

Building a Text Adventure Game

Do While Loops

Solution Average Calculator

Break and Continue

Simple Array

Declaring and setting values for arrays in the same line

Foreach and length of an array

Understanding Loops in C#

TwoDimensional Arrays

ThreeDimensional Arrays

CHEATSHEET - Loops in C#

Using Arrays

Let´s talk about Jagged Arrays

ADVANCED EXERCISE: Working with Two-Dimensional Arrays and Loops

Intro To Functions / Methods

Void Method without Parameters

Void Method with a Parameter Part 1

Void Method with a Parameter Part 2

Understanding Methods in C#

Scope of variables and parameters

Quick lesson about Argument Promotion

Parameter Modifiers in C# (ref, out, and in)

Moving to the classical Template - Top Level Statements

Moving our Methods outside of the Main Method

Fields, instance variables and how they differ from local variables

Variable and Scope Understanding

WeatherSimulator - Using Arrays, Random, and For Loops

WeatherSimulator - Calculating the Average Temperature

Mixing Doubles and Ints when Calculating

WeatherSimulator - Getting the Min and Max Values of an array

WeatherSimulator - Getting the Most common weather condition

CHEATSHEET - Functons and Methods in C#

Recursion in C#

ADVANCED EXERCISE: Calculating Average Temperature

Objects Intro

Introduction To Classes And Objects

Creating our First own Class

Member Variable and Custom Constructor

Properties - Autogenerated - to protect our member variable

Defining how a property is set

Modifying the Get of our Property Part 1

Modifying the Get of our Property part 2

Having Multiple Constructors

Default Constructor and Use Cases

Understanding Constructors

Methods in Classes

Methods in Classes in more detail

Expression Bodied Members in C#

What are Inner Classes in C#?

Partial Classes and Methods

Optional Parameters

Named Parameters

Operator Overloading in C#

Passing Arguments by Value and by Reference

Computed Properties and No Constructor

Static Methods

Using Static Methods

Static Fields

Static Keyword Considerations

The is Operator and the as Operator in C#

Public and Private Keywords

ID Key and readonly

Read Only Properties

Working with Read-Only Properties

Write Only Properties

Const and ReadOnly

Working with Read-Only Properties

Quiz Project Introduction

QuizApp - Question Class

Keyword This

Displaying Questions

Displaying Answers, Console.Write and Console.ForegroundColor

Getting the UserInput and checking if it is right

Displaying Multiple Questions and if we are right or wrong

Displaying the Results

CHEATSHEET - Object Oriented Programming in C#

ADVANCED EXERCISE: Creating a Class with Properties and Methods

Presentation Lists Overview

Declare a List, add and read List item

Removing Items from a List

Initializing a list with items

Initializing a List with Items

Sort() ing a list

Working with Lists

FindAll

Predicates and Lambdas

Predicates with Find All and Delegates

Any Method

Using the Any Method on a List

Using Lists with complex Objects

List.Where() and getting a first touch point with LINQ

Using LINQ with Lists

Legacy ArrayLists

Legacy Hashtables

Nullables in Csharp

Dictionaries Part 1 - Declaring, Initializing and Adding Items

Dictionaries Part 2 - Updating, Removing entries and Iterating through Dictionar

Gracefully Adding and Updating Dictionaries

Using a Complex Object as the Value of a Dictionary

Using a Complex Object as the Value of a Dictionary

Why use this Dictionary instead of an array

Another way to declare and initalize dicts plus string as key

CHEATSHEET - Collections in C#

ADVANCED EXERCISE: Advanced Dictionary Operations

Try And Catch

Understanding Try-Catch

The Finally Keyword

The Finally Keyword

Try Catch, huh. Why not just use If Statements

Debug Log

Throw Keyword

Managing multiple Types of Exceptions

Exception Handling Techniques

Why the Default Exceptions rocks

How Exceptions Work with the Call Stack

How to Handle Exceptions Properly

CHEATSHEET - Debugging in C#

ADVANCED EXERCISE: Handling Multiple Exceptions

Inheritance Base Class vs Derived Class

(HAS-A) and (IS-A) Relationship in C#

The 3 slash 4 Types of Inheritance

Access Modifiers and the Protected Keyword

Method Overriding with override and virtual

Method Hiding in C#

Sealed Methods in C#

Understanding Method Overriding

The Base Keyword and Why Inheritance even matters

Abstract Classes and Methods in C#

Working with Inheritance and Base Keyword

Constructor Inheritance 1 - Base Keyword with Constructors and How Properties ar

Constructor Inheritance

Constructor Inheritance

When and Why Constructor Inheritance is Useful

Constructor Inheritance and Usage

Constructor Inheritance with Multiple Derived Classes

Every Class inherits from the Object class

XML Comments Documentation

Sealed keyword

CHEATSHEET - Inheritance and more on OOP

ADVANCED EXERCISE: Advanced Method Overriding

What and Why Interfaces - Including Syntax

Implementing and using Interfaces - Exercise

Challenge - Create a Cat Class that implements IAnimal

Solution Exercise - Create a Cat Class that implements IAnimal

Implementing and Using Interfaces

What is Polymorphism and why use it

The second part of Polymorphism

Understanding Polymorphism

Interface Reusability while using Polymorphism

Understanding the difference of Polymorphism and Interfaces in our Payment Examp

Polymorphism with Interfaces

CHEATSHEET - Polymorphism + Adv OOP + Text File

Storing a Log Text File on your PC with your own text

Creating a Folder on Your PC and Logging text there

Decoupling Code and Enhancing Testability

Dependency Injection in C# Made easy - So what is DI in C#?

Understanding Dependency in Dependency Injection

Super Simple Constructor Dependency Injection

Setter Dependency Injection

Interface Dependency Injection and Comparison

Understanding Dependency Injection

Dependency Injection Methods

Multiple Inheritance in csharp

Abstract Class vs Interface in C#

ADVANCED EXERCISE: Polymorphism with Interfaces

Introduction to Structs

Structs example get distance between two points

Understanding Value Type vs Reference Type with Structs vs Classes

Understanding Structs in C#

Enums in C#

DateTime

MathClass

ADVANCED EXERCISE: Using Structs with DateTime and Math

Garbage Collection

Introduction to Delegates

Where to declare delegates

Simple delegates example

Quick Class! - What are Bubble Sort Algorithms?

Super quick intro to Generics

Combining Generics with Delegates to make a sorting algorithm

Multicast Delegates

Understanding Multicast Delegates

GetInvocationList seeing which methods are in a multicast delegate

Intro to Events - Publishers and Subscribers

Real World example - Events - Temperature Monitor

ADVANCED EXERCISE: Stock Price Alert System with Dynamic Thresholds

Using EventArgs and EventHandler

Understanding Events

What this chapter is about

What is Regex

So, what is Regex then?

Using dots and wildcards, Regex Matching, and Quantifiers

Creating groups and ranges and using alternation constructs

Finding Specific Patterns and some examples for our challenges

CHALLENGE: Telephone number Challenge

CHALLENGE: Mr and Mrs

CHALLENGE: Web URL Challenge

Using Regular expressions in CSharp

ADVANCED EXERCISE: Extracting Email Addresses with Regex

Setting Up WPF Projects in Visual Studio 2025

Common Mistakes, Errors, and Troubleshooting in WPF Development

Installing the WPF workload

Creating a WPF project

WPF project structure and code behind files

Creating our first GUI Element

Creating a grid with columns and rows

Fixed, auto and relative sizing

Creating a perfect grid

WPF Challenge - Recreate this GUI

WPF Challenge Solution - Recreate this GUI

Column span and row span

Creating GUI elements with C Sharp.mp4

Element properties for styling and positioning

Button click and event handlers

Todo List application intro and project setup

Creating the grid, button and text box

Creating the scrollview and stackpanel

Setting x name attributes for access

Adding the todo creation logic

Introduction ContentControl and UserControl

Creating ContentControl and UserControl for login

Designing the LoginView

Displaying the LoginView UserControl

Creating and displaying InvoiceView UserControl

Data Binding introduction

Setting up the data to bind

One-Way data binding

Two Way Databinding

One Way To Source Databinding

One Time Databinding

ListBox introduction

ListBox ItemSource

ListBox ItemTemplate

ListBox accessing selected data

Next application (login functionality)

Creating the project and login user control

Adding the password box

Environment variables

Using the environment variable for login

Password change event

How to move on

WPF Currency Converter - Project overview and setup

WPF Currency Converter - Rectangles and Gradients

WPF Currency Converter - Setting Up Stack Panel and Labels

WPF Currency Converter - Customizing Buttons and Implementing Click Events

WPF Currency Converter - Creating Input Fields with Text Box and Combo Box

WPF Currency Converter - Binding Values to Combo Boxes

WPF Currency Converter - Input Validation and Completing the Logic

PROJECT CODE can be found HERE!

Databases Intro

Setup MS SQL Server and VS For DB work

Intro And Setting Up Our DataSet And Table

Relationship or Associative Tables

Showing Data in a ListBox

Showing Associated Data

Displaying all Animals In The ListBox

Deleting From A Table With A Click

Added Note - Adding the base tables and entries back

Delete Animals, Remove Animals and Add Animals Functionality

Updating Entries in Our Tables

Databases Outro

WPF Currency Converter - Building a Currency Converter with Database Integration

WPF Currency Converter - Designing the User Interface for Currency Conversion

WPF Currency Converter - Understanding Data Grid Functionality and Properties

WPF Currency Converter - Setting up a Database for Currency Conversion

WPF Currency Converter - Implementing SQL Connections for Database

WPF Currency Converter - Implementing Save Button Functionality

WPF Currency Converter - Adding a New Currency Entry

WPF Currency Converter - Inserting and Editing Data in the Database

PROJECT CODE can be found HERE!

Linq Intro

Linq gentle Introduction

Linq Demo

Linq with Lists - and our University Manager Part 1

Sorting and Filtering with Linq

Creating collections based on other collections

Linq with XML

Setting up the project for LinqToSQL

Inserting Objects into our Database

Using assiociative tables with Linq

Joining tables next level

Deleting and Updating

Linq Outro

Understanding JSON

WPF Currency Converter - Using Live Currency Values Using An API And JSON

Final Currency Converter code base can be foind here!

Intro

Time complexity

Cats and food

Sum of two

Clean Code Presentation

Clarity and precision in naming

Naming convention cases

Special convention for naming private fields

Naming classes and methods

Naming boolean values

Meaning through naming

Writing good comments

Code TODOs

Code documentation through Summary

Formatting code

Organizing files and namespaces

Method structuring

Using braces

DRY principle (Don't repeat yourself)

KISS Principle (Keep it simple, stupid)

Exception handling

SOLID presentation

Single Responsibility Principle (SRP)

Open-Closed Principle (OCP)

Liskov Substitution Principle (LSP)

Interface Segregation Principle (ISP)

Dependency Inversion Principle (DIP)

Congrats on completing the C# clean code section

An Introduction to C# Generics

Creating a generic class

Using a generic class type in a method

Multiple generic types in a class

Generic methods without generic classes

Constraints for generics classes

Custom interface constraint

Constraints for generic methods

Generic interfaces

Constraints for generic interfaces

Combing generic classes and generic interfaces

Generic reflections

Action<> generic delegate

Func<> generic delegate

Predicate<> generic delegate

C# Delegates Challenge "Task Management System"

Generics Challenge Solution "Task Management System"

Congrats on completing the generics section

Threads Intro

Threads Basics

Thread Start and End &Completion

ThreadPools and Threads in The Background

Join And IsAlive

Tasks and WPF

Threads Readings

Threads Outro

TDD Introduction

What is TDD - Test Driven Development

Create Project and Write First Test

Refactoring and Adding Domain

Adding Web API

Test First Approach

Assertion Message

Fluent Assertions

Test Conditions and Prerequisites

Setting Up Flight Project

Translating a Scenario to Test

Red Green Refactor

Given When Then Pattern And Avoid Overbooking Scenario Discovery

Avoid Overbooking Scenario

Test Trustwhortiness And Devils Advocate

Practical Devils Advocate For Remaining Number of Seats

Paremeterized Tests

Discovering new scenarios by checking if the production code is complete.

Refactoring "remember_bookings."

Rules of TDD

Scenario: Cancel bookings using Test-Driven Development Rules

Handle Cancel Booking & No Booking Found

How You Discover New Scenarios

Application Layer Testing

Scenario: Application Layer Booking Part One

Scenario: Application Layer Booking Part Two

Scenario: Application Layer Booking Part Three

Configure In Memory Database

Parameterize Book Flights Test

Implementing Booking Service

Refactoring Booking Service

Create Test for Cancelling Bookings

Finalize Cancel Booking

Naming Conventions

Test Suit as Documentation

Application Layer

Intro Unity Basics

Installing Unity

Overview of the Unity Interface

Creating your own Layout

Player Movement

Making Sure We Make Changes Correctly

Physis Basics

RigidBody - A Physical Body

Colliders And Their Different Types

Triggers

Prefabs And GameObjects

Components And More On Prefabs

Keeping The Hierarchy Tidy

Class Structure

Mathf And Random Class

Unity Basics Outro

Pong Introduction

Basics - UI Elements

Basics - Accessing Text Through Code

Basics - Buttons

Basics - Switching Scenes

Basics - Play Sound

Project Outline - Pong

Creating The Main Menu

Switching Scenes and Using Buttons

Building Our Game Scene

2D vs 3D Colliders and Rigidbody For Our Ball

Moving Our Ball Left And Right

Racket Movement

Bouncing Off Correctly

Scoring System

Restarting A Round

The Game Over Screen

Adding Sound To The Game

Adding a Basic AI

Chapter Summary

Chapter Intro

Zig Zag Intro

Basics- Instatiating (Creating Via Code) An Object

Basics - Invoke And InvokeRepeating For Delayed Calls And Repeated Calls

Basics - Playerpreferences - Saving Data

Basics - Raycast

Setup For Zig Zag

Setting The Perspective

Moving The Character

Make Camera Follow Player

Animate The Character

Start The Game

Restart The Game

Collecting Crystals And Increasing The Score

Adding A Highscore

Adding The Particle Effect

Background Music Loop

Procedural Creation Of Our Map

Chapter Intro

Create Fruits And Explode Them

Fruit Spawner

Creating Our Blade

GUI and Bombs

Game Over and Restart

Adding The Highscore

Extend The Game

Prepare Code For Android

Test On An Android Device

Make Some Adjustments

Adding Unity Ads to Your Game

Setting Up Your Device as Developer Device

Adding Sound

Thanks for finishing the course