C# course: the 10 best in 2026

Best for experienced C# developers and architects. It is a hands-on set of case studies on numerics and SIMD, reflection and attributes, memory management with ref structs and Span<T>, advanced extension methods, exploiting IDisposable, continuation passing style, local inversion of control and the Maybe monad.

It has 4.5 stars from more than 1,100 reviews and more than 8,600 students. It runs about five hours and was last updated in November 2025. We lowered it because it is for specialists, not for learning the language.

Best for beginners who want a compact, structured tour of C# and OOP. Sameer covers console input and output, types, operators, nullable types, conversion, arrays, conditions, loops, strings, methods, classes and properties, then polymorphism, inheritance, interfaces, abstract classes and encapsulation, with hands-on exercises.

It has 4.6 stars from 645 reviews and more than 3,500 students. It runs about 10 hours with five quizzes, but was last updated in June 2024.

Best for complete beginners who want only what they need to get productive. Tim and Jean-Paul cover creating a basic program, the compiler, classes, properties and namespaces, and how to debug and refactor badly written code in Visual Studio, with setup videos for Windows and Mac and notes for Linux users.

It has 4.6 stars from more than 2,300 reviews and more than 12,000 students. It runs about 13 hours with nine quizzes and was last updated in April 2025.

Best for learners who know the basics and want to practice. It offers 100 in-browser coding problems covering loops, collections, LINQ, pattern matching, error handling, algorithms, tuples, nullable types, reflection, operator overloading, custom attributes and generic math, each with a written solution and a solution video.

It has 4.6 stars from 162 reviews and more than 3,200 students. It runs about five hours of solution videos and was updated in October 2026. We lowered it slightly because it is practice rather than a full course.

Best for people who want a quick first look at C#. It introduces the language's syntax and structure and how C# is used for Windows desktop apps, Unity games, ASP.NET web development and cross-platform mobile apps.

It has 4.7 stars from more than 1,600 reviews and more than 42,000 students. It runs about three hours with 12 quizzes and two practice tests, and was updated in September 2026. We lowered it because it is too short to be a complete course.

Best for beginners who want to build real desktop business apps. It covers Visual Studio, console apps with .NET 6, 7 and 8, syntax, data types, control structures, strings and dates, OOP and debugging, then data-driven Windows Forms apps with SQL Server, user and role management, login, LINQ, MDI applications and source control on GitHub.

It has 4.7 stars from more than 1,400 reviews and more than 103,000 students. It runs about 22 hours and was updated in June 2026.

Best for programmers who want to cover every C# language feature in depth. Harsha Vardhan covers .NET basics, OOP, fields, methods, constructors, properties, inheritance, interfaces, generics, null handling, garbage collection, delegates and events, collections, LINQ, file I/O, serialization, multithreading and async, and new features from C# 3 to C# 14.

It has 4.6 stars from more than 6,100 reviews and more than 38,000 students. At about 77 hours it is the longest course here, with two quizzes, two practice tests and a banking application project, and was updated in September 2026.

Best for developers preparing for a mid-level C# interview. Built on more than 250 technical interviews, it covers reflection, the dynamic keyword, pattern matching, nullable reference types, design principles, five design patterns, collections in depth, events and lambdas, across 50 core questions and 100 bonus ones.

It has 4.7 stars from 661 reviews and more than 7,400 students. It runs eight hours with 60 quizzes and 10 in-browser coding exercises, plus two e-books, flashcards and an Anki deck, and was updated in October 2026.

Best for beginners who want C# plus desktop and game frameworks. Denis Panjuta starts with variables, arrays, conditions, loops and algorithms, moves to OOP, clean code and SOLID, then covers events, delegates, interfaces, generics, databases, LINQ, WPF desktop apps, unit testing and an introduction to Unity.

It has 4.5 stars from more than 38,000 reviews and more than 183,000 students, the most on this list. It runs about 45 hours with 92 quizzes and 158 resources, and was last updated in October 2025.