C# Fundamentals

Learn C# from scratch in 10 weeks. Build real programs with .NET 10 and Visual Studio 2026: variables, loops, collections, OOP, error handling, LINQ, JSON and unit testing. Finish with a capstone app you can show employers.

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Course curriculum

1. Welcome to the course
2. What is a Program?
3. Meet C# and .NET
4. How C# Code Runs: Compiler, IL and the Runtime
5. Installing Visual Studio 2026 and .NET 10
6. Creating Your First Console Project
7. Hello, World: Your First C# Program
8. Anatomy of a C# Program
9. Using the dotnet CLI
10. File-Based Apps in .NET 10
11. Reading Your First Compiler Errors
12. Lab 1: Hello, World, Your Way
13. Variables: Labelled Boxes for Values
14. The Built-in Data Types
15. Value Types vs Reference Types
16. var and const
17. Working with Strings
18. Console Input and Output
19. Naming Rules and Conventions
20. Lab 2: Profile Card
21. Chapter Recap
1. Choosing the Right Decision Tool
2. Lab 2: Cinema Ticket Pricer
3. Chapter Recap
1. Introduction
2. Why Loops?
3. The for Loop
4. The while and do-while Loops
5. The foreach Loop
6. The break and continue Jump Statements
7. Nested Loops
8. Infinite Loops and How to Stop Them
9. Debugging in Visual Studio 2026: Breakpoints and Stepping
10. Inspecting Variables While Debugging
11. Lab 1: Number Guessing Game
12. Why Methods?
13. Anatomy of a Method
14. Calling Methods and Returning Values
15. Method Overloading
16. Optional and Named Arguments
17. ref, out and in Parameters
18. Variable Scope
19. Expression-Bodied Methods and XML Doc Comments
20. Lab 2: Library Manager Menu (Capstone Start)
21. Chapter Recap
1. Introduction
2. What is an Array?
3. Creating Arrays
4. Looping Through Arrays
5. IndexOutOfRangeException: Predict the Output
6. Index from End and Ranges
7. Sorting, Searching and 2D Arrays
8. The String Toolkit
9. Immutable Strings and StringBuilder
10. Format Specifiers
11. Lab 1: Word Stats
12. Why List?
13. List in Action
14. Dictionary
15. Using Dictionaries Safely with TryGetValue
16. HashSet
17. Queue and Stack
18. Choosing the Right Collection
19. Lab 2: Library Manager Gets Storage
20. Chapter Recap
1. Introduction
2. Why Objects?
3. Defining a Class
4. Properties
5. Read-Only and Computed Properties
6. The field Keyword (New in C# 14)
7. Constructors
8. Object Initialisers and Primary Constructors
9. Static vs Instance Members
10. Methods on Objects
11. Lab 1: BankAccount
12. Encapsulation
13. Access Modifiers
14. Validation: Never Let a Bad Object Exist
15. Overriding ToString
16. Object Equality: Predict the Output
17. Records
18. Structs
19. Class, Record or Struct?
20. Lab 2: Library Manager Gets Objects
21. Chapter Recap
1. Introduction
2. What is Inheritance?
3. Inheritance Syntax and Base Constructors
4. protected Members
5. virtual and override
6. Forgetting override: Predict the Output
7. Calling the Base Version
8. Abstract Classes
9. sealed Classes and the object Base Class
10. Composition vs Inheritance
11. Lab 1: Shapes
12. What Is an Interface?
13. Defining and Implementing Interfaces
14. Implementing Multiple Interfaces
15. Polymorphism
16. Built-in Interfaces: IComparable and IEnumerable
17. Type Checks with is and as
18. Abstract Class or Interface?
19. Lab 2: Library Manager Loans
20. Chapter Recap
1. Introduction
2. What Is an Exception?
3. try and catch
4. Multiple catch Blocks
5. finally
6. The Exception Hierarchy
7. Throwing Exceptions
8. Custom Exceptions
9. Exception Filters with when
10. Exception Handling Best Practices
11. Lab 1: Safe Calculator
12. What Is null?
13. Nullable Reference Types
14. The Null-Conditional Operator ?.
15. Null-Coalescing ?? and ??=
16. The Null-Forgiving Operator !
17. Nullable Value Types
18. Enums
19. Enums with Switch Expressions
20. [Flags] Enums
21. Lab 2: A Safer Library Manager
22. Chapter Recap
1. Introduction
2. Meet the Sample Data
3. Why LINQ?
4. Lambdas Explained
5. Where and Select
6. Sorting with OrderBy and ThenBy
7. First, FirstOrDefault and Single
8. Any, All, Count, Sum and Average
9. GroupBy
10. Building LINQ Pipelines
11. Lab 1: Shop Analytics
12. Why Persist Data?
13. File Paths
14. Reading and Writing with the File Class
15. Checking Files and Creating Folders
16. Streams and using
17. What is JSON?
18. Serialising with System.Text.Json
19. Handling Missing or Broken Files
20. Load on Start, Save on Exit
21. Lab 2: Library Manager Search and Save
22. Chapter Recap
1. Introduction
2. Solutions vs Projects
3. Creating a Class Library
4. Project References
5. Namespaces
6. using Directives and Global Usings
7. Access Modifiers Across Projects
8. NuGet Packages
9. Example: Tables with Spectre.Console
10. A Tour of the .csproj File
11. Lab 1: Split the Library Manager
12. Why Test?
13. Adding an xUnit Test Project
14. [Fact] and Arrange-Act-Assert
15. Common Assertions
16. [Theory] and [InlineData]
17. Test Explorer
18. Naming Tests
19. What Makes a Good Test
20. A Taste of Test-First
21. Lab 2: Testing Library.Core
22. Chapter Recap
1. Introduction
2. Definition of Done
3. Code Review Checklist
4. Refactoring Quick Wins
5. Writing a README
6. Publishing with dotnet publish
7. Publishing from Visual Studio 2026
8. Peer Code Review
9. Lab 1: Finish, Review, Publish
10. Demo Format
11. The Assessment Rubric
12. Your 10-Week Journey
13. What You Can Build Now
14. Where Next: Advanced C#
15. Practice Project Ideas
16. Resources and Habits
17. Demo Night
18. Course Recap

About this course

£250.00
190 lessons
29 hours of video content

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C# Fundamentals

Course curriculum

Getting started with C#

Making Decisions

Loops and Methods

Collections

Objects - Part 1

Objects - Part 2

Errors and Null Safety

Working with Data

Code Quality

Ship It

About this course

Discover your potential, starting today