Course

Write High-Performance C# Code

This course will teach you how to speed up your C# code with performance tricks that every professional developer should know. You’ll learn the fundamentals of the .NET Framework, the Garbage Collector, the stack and heap, boxing and unboxing, and much more.

I’ll also give you a crash course in Intermediate Language so that you can read the machine language produced by the C# compiler.

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Technology covered in this course: C#

Details

This course will teach you how to speed up your C# code with performance tricks that every professional developer should know. You’ll learn the fundamentals of the .NET Framework, how the Garbage Collector works, the difference between the stack and the heap, what boxing and unboxing is, and much more!

We’ll also look at array performance, using pointers in C# to manipulate memory directly, and a neat trick to place an array in stack memory for extra performance. Throughout the course we will be compiling C# code snippets into Intermediate Language, and then inspecting the compiled code for performance bottlenecks. You’ll learn how to interpret basic IL instructions and read machine code directly.

Course Lessons

Lab Lessons

Modules

Introducing C# Performance Optimization (3 lessons)

.NET Runtime Memory Management (5 lessons)

The .NET Type System (11 lessons)

The .NET String Type (5 lessons)

Prerequisites: C# And The .NET SDK (2 labs)

A Crash Course In Intermediate Language (6 lessons)

Basic Performance Optimizations (11 lessons)

Array Performance Optimizations (12 lessons)

What You'll Need To Get Started

To follow along with the course and complete the labs, you’ll need a few tools installed. It’s all free, cross-platform, and easy to set up.

Requirements:

A computer running Windows, macOS, or Linux (no GPU required)
Visual Studio Code: the free, lightweight code editor from Microsoft
.NET SDK: the runtime and build tools for C#

I will walk you through the setup of each tool in the course.

What My Students Are Saying

"Where did you find this trainer? Amazing! The training is very complete with labs and exam training."

Anonymous

"I have learned so much from your courses, looking forward to more great content. Keep up the amazing work!"

Adam Lindqvist

Have Questions Before You Start?

You're almost ready to dive in! If there's anything you're unsure about, take a moment to explore the answers below. I’ve covered the most common questions about this course, the platform, and what you can expect. But if you still need help, don’t hesitate to send me a quick message and I’ll be happy to help you.

What exactly do I get when I buy this course?

You get lifetime access to the full training: all lectures, knowledge quizzes and your membership in the online discussion forums.

Is this course beginner-friendly?

Yes! You should be comfortable with basic cloud concepts, but no prior experience with Azure is required.

How am I supported if I get stuck?

You'll get access to a private discussion forum for this course where you can ask questions and share insights. Members also get priority support and access to a private community space.

Can I get access to more courses?

Absolutely. This course is part of a growing library. With the All-Access Membership, you get everything—including future releases—and a curated gold learning path to guide your progress.

How long do I have access?

Forever. When you buy this course, it’s yours for life, including any future updates.

Do I get future updates to this course?

Yes. Any improvements or updates to this course will be included automatically at no extra charge.

Can I enroll my whole team?

Yes. Team and enterprise licenses are available. Contact me for group pricing and custom onboarding options.