Learn Azure AI Search with C# — index data, run vector and hybrid queries, and add RAG to your .NET app. Start building intelligent search today. If your application's search box still runs a LIKE '%term%' query against SQL Server, your users are quietly suffering. They type "cheap laptop for uni" and get zero results because your catalogue says "affordable notebook for students." Azure AI Search with C# fixes exactly this problem: it combines classic keyword search, vector embeddings, and semantic reranking into a single managed service that you can drive from .NET with a few dozen lines of code. In this tutorial you'll build a working search index from scratch, run keyword, vector, and hybrid queries, and finish with a Retrieval Augmented Generation (RAG) pattern that grounds an LLM in your own data. This guide targets .NET 9 and the Azure.Search.Documents v11 SDK. Every snippet is runnable. We'll explain why each design choice matter...
Learn C# unit testing with xUnit and test-driven development. Step-by-step tutorial with code examples, best practices, and common pitfalls. C# Unit Testing with xUnit: A Complete Test-Driven Development Tutorial C# unit testing is one of the most essential skills every .NET developer must master in 2026. Whether you are building APIs, desktop applications, or microservices, writing automated tests ensures your code works correctly, catches regressions early, and gives you the confidence to refactor without fear. In this comprehensive xUnit tutorial, you will learn how to write unit tests in C# using the test-driven development (TDD) approach รข€” from your very first test to advanced patterns used in production codebases. By the end of this guide, you will understand how to set up xUnit in a .NET project, write meaningful tests using the Arrange-Act-Assert pattern, apply TDD to build reliable software, and avoid the most common unit testing mistakes that developers make. Why...