C# 14 · .NET 10 · Visual Studio 2026

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Program.cs — C# 14 · .NET 10

1// C# 14 — top-level statements, primary constructors, collection expressions
2using Microsoft.Extensions.DependencyInjection;
3
4var services = new ServiceCollection()
5    .AddSingleton<IGreeter, Greeter>()
6    .BuildServiceProvider();
7
8var greeter = services.GetRequiredService<IGreeter>();
9greeter.Greet(["Alice", "Bob", "World"]);
10
11public interface IGreeter { void Greet(string[] names); }
12
13// Primary constructor — C# 14
14public class Greeter(ILogger<Greeter> logger) : IGreeter
15{
16    public void Greet(string[] names)
17    {
18        foreach (var name in names)
19            logger.LogInformation($"Hello, {name}!");
20    }
21}

40+

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Curriculum overview

Everything you need to
become a C# expert

This isn't a surface-level tutorial. Each lesson goes deep — with real code, working examples, and the patterns used in production systems at scale.

⚡

C# 14 Language Features

Primary constructors, collection expressions, interceptors, the field keyword, and all the latest syntax innovations.

🏗️

Object-Oriented Programming

Classes, interfaces, inheritance, polymorphism, encapsulation — with advanced patterns like SOLID and design patterns.

🔄

Async / Await & Concurrency

Task-based async programming, ValueTask, IAsyncEnumerable, channels, and avoiding deadlocks in real apps.

🔍

LINQ & Functional Patterns

Master LINQ for objects, EF Core queries, deferred execution, and applying functional programming ideas in C#.

🧬

Generics & Type System

Generic classes, methods, constraints, covariance, contravariance, and leveraging the full power of C#'s type system.

🚀

Performance & Memory

Span<T>, Memory<T>, ArrayPool, ref structs, unsafe code, and writing zero-allocation hot paths.

🌐

ASP.NET Core & Web APIs

Build production REST APIs with minimal APIs, controller-based APIs, middleware, authentication, and OpenAPI.

🗃️

Data Access & EF Core

Entity Framework Core 10, Dapper, repositories, unit of work, migrations, and query optimization.

🧪

Testing & Code Quality

xUnit 3, NSubstitute mocking, FluentAssertions, TDD workflow, integration testing, and code coverage.

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Complete curriculum

All 40 C# Lessons

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● Beginner ● Intermediate ● Advanced ● Expert

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🚀

C# & .NET 10 — Getting Started

FoundationsBeginner

→ 02

📝

Variables, Types & Operators

FoundationsBeginner

→ 03

🔀

Control Flow — if, switch, loops

FoundationsBeginner

→ 04

🧩

Methods, Parameters & Return Types

FoundationsBeginner

→ 05

🏛️

Classes & Objects — OOP Fundamentals

OOPIntermediate

→ 06

🧬

Inheritance & Polymorphism

OOPIntermediate

→ 07

📐

Interfaces & Abstract Classes

OOPIntermediate

→ 08

📦

Collections — Arrays, Lists & Dictionaries

Core C#Intermediate

→ 09

🔍

LINQ — Language Integrated Query

Core C#Intermediate

→ 10

⚠️

Exception Handling & Error Patterns

Core C#Intermediate

→ 11

🎭

Delegates, Events & Lambdas

Core C#Intermediate

→ 12

🧬

Generics — Types, Methods & Constraints

→ 13

→ 14

Async / Await & Task-Based Programming

AsyncIntermediate

→ 15

🔧

Structs, Records & Value Types

Core C#Intermediate

→ 16

🎯

Pattern Matching & Switch Expressions

Core C#Intermediate

→ 17

🔐

Nullable Reference Types & Null Safety

Core C#Intermediate

→ 18

🔢

Enums, Attributes & Reflection

Core C#Intermediate

→ 19

📡

Extension Methods & Fluent APIs

Core C#Intermediate

→ 20

🧲

Dependency Injection in C#

ArchitectureIntermediate

→ 21

🌐

HttpClient & REST API Consumption

NetworkingAdvanced

→ 22

📋

JSON Serialization with System.Text.Json

DataAdvanced

→ 23

🗃️

Entity Framework Core 10 Essentials

Data AccessAdvanced

→ 24

🧪

Unit Testing with xUnit 3 & NSubstitute

TestingAdvanced

→ 25

🔑

SOLID Principles in C#

ArchitectureAdvanced

→ 26

🎨

Design Patterns in C#

ArchitectureAdvanced

→ 27

🔀

Concurrency — Threads, Mutex & Semaphore

AsyncAdvanced

→ 28

🔧

C# 14 — Primary Constructors & New Syntax

C# 14Advanced

→ 29

🌊

IAsyncEnumerable & Streaming Data

AsyncAdvanced

→ 30

🏗️

Building REST APIs with ASP.NET Core 10

Web DevAdvanced

→ 31

⚡

Span<T>, Memory<T> & Zero-Allocation Code

PerformanceExpert

→ 32

🔬

Source Generators & Roslyn APIs

MetaprogrammingExpert

→ 33

🎯

Expression Trees & Dynamic LINQ

Advanced LINQExpert

→ 34

🛡️

Unsafe Code, Pointers & Native Interop

Low-LevelExpert

→ 35

🤖

ML.NET & AI Integration in C#

AI / MLExpert

→ 36

📊

BenchmarkDotNet & Performance Profiling

PerformanceExpert

→ 37

🏛️

Domain-Driven Design in C#

ArchitectureExpert

→ 38

🔄

Channels & the Actor Model

ConcurrencyExpert

→ 39

🧩

Interceptors, Mixins & Metaprogramming

C# 14Expert

→ 40

🏆

Capstone — Full C# Production App

CapstoneExpert

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Master C# fromZero to Production

C# for Beginners Using Visual Studio 2026

Continue Your C# Journey at CSharpTutorHub.com

Everything you need tobecome a C# expert

C# 14 Language Features

Object-Oriented Programming

Async / Await & Concurrency

LINQ & Functional Patterns

Generics & Type System

Performance & Memory

ASP.NET Core & Web APIs

Data Access & EF Core

Testing & Code Quality

Start Free

Master Core C#

Build C# Games

Build AI Agents

C# Database Programming with Windows Forms and SQL Server

All 40 C# Lessons

Browse every lesson from the sidebar

Three strong paths after the free tutorial

C# in Visual Studio 2026

C# Game Programming Made Easy

Building AI Agents with Python and C#

Why these books work together

Start free, then choose your C# project path

Master C# from
Zero to Production

Everything you need to
become a C# expert