C# and .NET Essentials

C# and .NETIntermediate2 articles · 1 quiz · 2 snippets

Two ideas that shape everyday C# code, LINQ and async/await, each with a worked snippet, followed by a quiz on the language fundamentals.

What's inside

1LINQ in C#: Querying CollectionsThe everyday LINQ operators, why queries are lazy, and the mistakes that cause surprising results or repeated database calls.Article
2Top Words with LINQCount word frequency, ignoring case, and take the five most common.csharpSnippet
3Async and Await in C#: A Practical GuideWhat async and await really do, why you should not block on tasks, and the handful of rules that prevent most async bugs.Article

4Retry with Exponential BackoffRetry a flaky async operation, doubling the wait between attempts.csharpSnippet

5C# and .NET FundamentalsTypes, strings, async/await, LINQ, resource handling and dependency injection.10 questions · Medium · 20 minQuiz

LINQ and / show up in almost every modern .NET codebase and in almost every .NET interview. This collection explains both, shows a small working example of each, and ends with a quiz that also covers value types, strings, resource handling and dependency injection.

Work through the items in order, or open whichever topic you need today.

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