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Learn SQL injection prevention in C# with parameterized queries, EF Core, and stored procedures. Secure your .NET database code today with proven examples. SQL injection remains one of the most dangerous and most common vulnerabilities in web applications today. If your C# application builds SQL queries by concatenating user input, it is almost certainly exploitable. In this guide on SQL injection prevention in C# , you will learn exactly how these attacks work, why they succeed, and how to secure your database queries completely using parameterized queries, Entity Framework Core, and stored procedures. Whether you are a beginner writing your first data-access layer or a senior engineer hardening a production system, this tutorial gives you practical, runnable examples you can apply immediately. What Is SQL Injection and Why It Still Matters in 2026 SQL injection (SQLi) is an attack where a malicious user inserts SQL code into an input field, tricking your application into execu...

Learn ASP.NET Core global error handling with middleware, Problem Details, and logging. Master exception handling best practices with runnable C# examples today. ASP.NET Core global error handling is the single most important thing you can add to a production API, yet it is the piece most tutorials skip. When an unhandled exception bubbles up in a poorly configured app, your users see an ugly stack trace, your logs are noisy and inconsistent, and attackers learn far too much about your internals. In this guide you'll learn how to implement global error handling in ASP.NET Core the right way — using centralized exception handling middleware, the RFC 7807 Problem Details standard, and structured logging — with practical, runnable C# examples you can drop straight into your project. Whether you are a beginner searching "how to handle exceptions in ASP.NET Core", an intermediate developer looking for best practices, or a senior engineer wiring up advanced error hand...

Learn TDD in C# using xUnit and Moq. Write tests first, code second with step-by-step examples and best practices. Start building better software today. TDD in C#: Why Writing Tests First Changes Everything TDD in C# is a development practice where you write a failing test before writing the production code that makes it pass. It sounds backwards, but test driven development in C# produces cleaner designs, fewer bugs, and code you can refactor with confidence. In this guide, you will learn how to practice TDD using xUnit and Moq — the two most popular testing libraries in the .NET ecosystem. If you have ever spent hours debugging a regression that slipped through manual testing, TDD is the answer. Instead of treating tests as an afterthought, you make them the driving force behind your design decisions. By the end of this article, you will have a complete, working C# TDD example you can apply to your own projects. What Is Test Driven Development in C#? Test driven deve...

Learn how to implement ASP.NET Core health checks to monitor databases, APIs & services. Step-by-step tutorial with code examples. Start monitoring now! ASP.NET Core Health Checks: Monitor Your Production App Like a Pro Your app is deployed. Users are active. Then at 2 AM, the database silently dies and nobody knows until customers start tweeting. Sound familiar? ASP.NET Core health checks solve this exact problem by giving you real-time visibility into the state of your application and its dependencies — databases, external APIs, message queues, disk storage, and more. In this guide, you'll learn how to implement health checks in ASP.NET Core from scratch, build custom health check logic, integrate with Kubernetes probes, and follow production-tested best practices that keep your systems observable and reliable. What Are Health Checks in ASP.NET Core? Health checks are HTTP endpoints that report whether your application and its dependencies are functioning correct...

Learn how to deploy ASP.NET Core to Azure App Service step by step. Follow this guide with CLI, Visual Studio & GitHub Actions examples. Start deploying now! Deploy ASP.NET Core to Azure App Service — A Complete Step-by-Step Guide If you have ever wondered how to deploy ASP.NET Core to Azure App Service without spending hours wrestling with configuration, you are in the right place. Azure App Service is Microsoft's fully managed platform for hosting web applications, REST APIs, and backend services. It handles infrastructure, patching, and scaling so you can focus on writing code. In this tutorial, you will learn three proven ways to deploy your ASP.NET Core application to Azure — using the Azure CLI, Visual Studio, and GitHub Actions for CI/CD. By the end, your app will be live on the internet with a real URL. What Is Azure App Service and Why Use It? Azure App Service is a Platform-as-a-Service (PaaS) offering that supports .NET, Node.js, Python, Java, and more...

Learn ML.NET with this step-by-step C# tutorial. Build, train, and deploy your first machine learning model in .NET with practical code examples. If you've ever wanted to add machine learning to a .NET application without leaving C#, this ML.NET tutorial is where you start. ML.NET is Microsoft's open-source, cross-platform framework that lets C# and F# developers build, train, and deploy custom machine learning models — no Python required, no context switching, just the language and ecosystem you already know. In this hands-on guide, you'll build a complete machine learning model in C# from scratch. We'll walk through real, runnable code that loads data, trains a binary classification model, evaluates its accuracy, and makes predictions — all using ML.NET in a standard .NET console application. By the end, you'll understand the ML.NET pipeline architecture, know how to pick the right algorithm for your problem, and have a working model you can integrate ...