This article is part of the Fundamentals section for developers who already know at least one programming language and are learning C#. If you're new to programming, start with the Get started ...

Imagine a student dashboard where: A user sees their name and enrolled courses (interpolation) Their profile picture is loaded (property binding) They click buttons to enroll/unenroll (event binding) ...

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I added one image, and suddenly the layout broke. The margins disappeared, the font changed on its own, and the buttons reverted to plain black text. This is the classic 'CSS (styles) not applying ...

A function expects a number, but somewhere in the project a string is passed instead. The compiler says nothing, the tests don't cover the case, and the error only ...