Today’s articles include topics on API Security, MediatR Patterns, ASP.NET Minimal APIs vs FastEndpoints, and Clean Endpoint Architecture

# Implementing API Key Authentication with LSCoreAuthKey in .NET

https://medium.com/limitlesssoft/implementing-api-key-authentication-with-lscoreauthkey-in-net-8359137c6bc0

Learn how to implement API Key authentication in .NET using the lightweight and flexible LSCoreAuthKey library—a seamless solution for securing your RESTful APIs. This guide walks through integrating LSCoreAuthKey with ASP.NET Core, showing how to configure the ILSCoreAuthKeyProvider, apply authentication middleware, and enhance security with LSCore.Exceptions. Whether you’re building microservices or enterprise-grade applications, this tutorial ensures you protect your endpoints using modern .NET API security best practices.

How I Built a Random Password Generator in C#

https://medium.com/@fulton_shaun/how-i-built-a-random-password-generator-in-c-c94f99685a85

Looking to boost your C# skills with a practical mini-project? This beginner-friendly guide walks through building a random password generator in C#, using Random, for loops, and string manipulation to generate secure alphanumeric passwords. Learn how to work with character pools, implement randomness, and display results cleanly in the console—an ideal introduction to console applications, string operations, and security basics in .NET. Whether you’re prepping for interviews or building out tools, this is a great starting point for hands-on .NET learning.

5 Most Common Async/Await Mistakes in C#

https://medium.com/dot-net-sql-learning/5-most-common-async-await-mistakes-in-c-9e0bc57c4302

Asynchronous programming has become an essential aspect of modern .NET application development today. The async and await keywords help… Continue reading on Dot Net, API & SQL Learning »

C# .Net Pipes

https://medium.com/@alex-lazarenko/c-net-pipes-7d73855784bb

IDive into the world of C# interprocess communication (IPC) with this comprehensive guide on implementing anonymous and named pipes in .NET. Learn how to build secure, bidirectional data streams across processes and threads using System.IO.Pipes, explore real-world usage of NamedPipeServerStream, AnonymousPipeClientStream, and implement advanced scenarios including multithreading and internetwork communication. Whether you’re developing cross-platform .NET applications, working with process synchronization, or designing IPC mechanisms, this walkthrough will help you master pipes in both Windows and Linux environments.

Unlocking Hidden Performance in Microsoft .NET: Iterating Over IEnumerable with the Enumerator

Unlocking Hidden Performance in Microsoft .NET: Iterating Over IEnumerable with the Enumerator

The article discusses the performance benefits of using an Enumerator to iterate over an IEnumerable collection, which can be faster than traditional foreach() or for() loops.

Search and Removal of Item from Local List in MAUI [GamesCatalog] 16

https://www.c-sharpcorner.com/article/search-and-removal-of-an-item-from-the-local-list-in-maui-gamescatalog-16/

Learn how to enhance your .NET MAUI app with efficient game list search and item removal functionality using local SQLite databases and MVVM best practices. This hands-on guide walks through implementing Expander-based UI controls, async SearchText filtering with CancellationToken, and seamless soft deletion using EF Core for managing game status. Whether you’re building a personal catalog app or a production-ready mobile UI, this tutorial shows how to integrate real-time search, data binding, and deletion logic into your MAUI project with .NET 9.

ASP.NET Core MVC Controller vs. minimal API vs. FastEndpoints — What’s the Best for Performance ?

https://medium.com/@denmaklucky/asp-net-core-mvc-controller-vs-minimal-api-vs-fastendpoints-whats-the-best-for-performance-cfee8a1809d7

Curious about which C# web API approach offers the best performance in real-world scenarios? This benchmark-driven comparison of ASP.NET Core MVC Controllers, Minimal APIs, and FastEndpoints dives into request duration, memory usage, and scalability across CRUD operations. Backed by k6 performance tests and a shared UsersService and DbContext, the analysis reveals why Minimal API in .NET 8 consistently outperforms others for lightweight, high-speed RESTful API development. A must-read for developers optimizing ASP.NET Core microservices and choosing between framework styles.

The Complete Beginner’s Guide to C# Programming

https://medium.com/@orbens/the-complete-beginners-guide-to-c-programming-1b46106458e6

If you’re just starting with C# or exploring the .NET ecosystem, this beginner-friendly guide is the perfect primer. Covering everything from setting up Visual Studio, writing your first “Hello World” app, and using variables and loops, to mastering async/await, exception handling, and building a complete console-based To-Do List app — this C# tutorial walks through the fundamentals of object-oriented programming and modern .NET practices. Whether you’re learning C# for desktop, web, or cloud development, this guide lays the groundwork for becoming a confident .NET developer.

Readable LINQ Over Nested One-Liners

https://medium.com/@KeivanDamirchi/readable-linq-over-nested-one-liners-961c2b8d3cdb

Struggling with unreadable LINQ one-liners in C#? This article by Keivan Damirchi demonstrates how to refactor nested LINQ queries into clean, readable, and intention-revealing steps using intermediate IEnumerable<T> transformations. By applying best practices in LINQ refactoring and naming conventions, developers can enhance maintainability, streamline debugging, and improve code onboarding for teams. Whether you’re optimizing .NET services or writing clean C# code, this practical guide on readable LINQ will help you write better functional logic without sacrificing performance.

Input Integrity in C# for Privacy-Safe LLM Systems

https://www.c-sharpcorner.com/article/input-integrity-in-c-sharp-for-privacy-safe-llm-systems/

Explore how AlpineGate AI implements input integrity in C# to secure large language model (LLM) prompts in privacy-critical industries like healthcare, finance, and legal. This article introduces advanced C# prompt sanitization, secure regex-based filters, and trusted execution environments (TEEs) that preserve raw user input while ensuring zero data exposure. You’ll learn how to build privacy-first LLM systems in .NET, leverage boundary-aware data filters, and apply whitelisting and policy-based validation to maintain regulatory compliance without sacrificing model accuracy — a must-read for developers building AI tools in compliance-heavy environments.

We Broke Up with MediatR — and Found in .NET’s Hidden Gem

https://medium.com/@metoz.florian/we-broke-up-with-mediatr-and-found-in-nets-hidden-gem-a62e3bc64ffb

“When your favorite library changes its rules, do you adapt… or break free?”

Armchair Architects: API and Endpoint Security

In this episode, Uli, Eric, and David dive into the critical topic of API security and Endpoint, discussing importance of using secure protocols like HTTPS, and the need for robust authentication and …

Simplifying CI/CD for .NET Docker Apps

https://www.c-sharpcorner.com/article/simplifying-cicd-for-net-docker-apps/

If you’re building .NET containerized applications and tired of wrestling with slow or fragile pipelines, this guide to simplifying CI/CD for .NET Docker apps is a must-read. Covering best practices like multi-stage Dockerfiles, GitHub Actions workflows, Buildpacks, and container layer caching, this article dives into real-world solutions for reducing build times, avoiding environment mismatches, and accelerating cloud-native deployments to platforms like Azure Kubernetes Service (AKS) or Azure Container Registry. Learn how to streamline your DevOps process for .NET 7 Docker images, boost developer productivity, and enforce CI/CD consistency across microservices—all without sacrificing flexibility or performance.

ASP.NET Community Standup – Building MCP Servers with ASP.NET Core

Advanced Database Programming with C# 14 and Microsoft SQL Server

https://www.c-sharpcorner.com/article/advanced-database-programming-with-c-sharp-14-and-microsoft-sql-server/

Unlock the power of C# 14 for enterprise-grade database programming with Microsoft SQL Server in this deep dive into advanced ADO.NET, Entity Framework Core, and performance optimization strategies. This guide explores modern features like primary constructors, collection expressions, EF Core interceptors, and temporal tables, enabling developers to write expressive, secure, and high-performance code. From implementing stored procedures with output parameters to automating SSIS ETL pipelines and integrating SQL CLR functions, this article offers real-world patterns and techniques for building scalable, auditable .NET applications that thrive in mission-critical environments.

Class vs Record in .NET: What’s the Real Difference, and Why Should You Care?

https://medium.com/@arpan.rao/class-vs-record-in-net-whats-the-real-difference-and-why-should-you-care-ac64209121cc

Curious about the real difference between class and record in C#? This article dives deep into how record types in .NET offer immutability, value-based equality, and cleaner syntax compared to traditional classes. With practical examples from C# 9.0 to C# 10+, you’ll learn when to use record, record struct, or class in data modeling, API contracts, and immutable architectures. Whether you’re writing DTOs or domain models, understanding class vs record in C# is essential for building maintainable and predictable .NET applications.

Abstract Factory Pattern for Notification Services in C# 14

https://www.c-sharpcorner.com/article/abstract-factory-pattern-for-notification-services-in-c-sharp-14/

If you’re building multi-channel notification systems in C# 14, understanding how to implement the Abstract Factory Pattern can save you from tightly coupled, hard-to-test logic. This article explores a practical and scalable architecture for managing providers like SendGrid, Twilio, and Firebase Cloud Messaging (FCM) using clean abstractions, dependency injection, and design patterns. Learn how to simplify your .NET application’s notification layer with this flexible and testable approach to notification service architecture.

Interactive EF Core Migrations: Use Dependency Injection and Dapper for Complex Data Fixes

https://gor-grigoryan.medium.com/interactive-ef-core-migrations-use-dependency-injection-and-dapper-for-complex-data-fixes-39c15fc8116f

Explore how to extend EF Core migrations in .NET using dependency injection and Dapper to handle complex data transformations like CSV-to-JSON conversion and geocoding in production systems. This article reveals how traditional raw SQL in EF Core migrations often falls short and shows how to implement maintainable, testable patterns using ContextAwareMigrationsAssembly, custom constructors, and micro-ORMs — all without sacrificing transactional safety. A must-read for developers dealing with advanced database migrations and real-world backfill logic in C# 14 and Entity Framework Core environments.

Don’t return Results or TypedResults in ASP.NET Core. Instead, do this

https://medium.com/@denmaklucky/dont-return-results-or-typedresults-in-asp-net-core-instead-do-this-b9f6f5598940

Discover a cleaner approach to handling success and error responses in ASP.NET Core Minimal APIs using the Result Pattern combined with IResult and implicit conversion. This article introduces a powerful alternative to TypedResults that eliminates repetitive boilerplate, streamlines endpoint response logic, and integrates seamlessly into your .NET 8 or C# 14 codebase. Whether you’re returning success or custom error types, this technique enhances maintainability and keeps your ASP.NET Core endpoints expressive, consistent, and testable — perfect for modern web API design.

How to Convert a List of Objects to a DataTable in C#

https://www.c-sharpcorner.com/article/how-to-convert-a-list-of-objects-to-a-datatable-in-c-sharp/

Learn how to efficiently convert a generic List of objects to a DataTable in C# using reflection, a practical approach widely used in Blazor, ASP.NET Core, and enterprise applications for scenarios like GridView data binding, Excel export, and SQL Server Table-Valued Parameters (TVPs). This reusable extension method eliminates boilerplate, works with any class structure, and integrates seamlessly into legacy ADO.NET workflows — making it a must-have utility in your .NET toolkit.

Introduction to Azure Web App Service

https://www.c-sharpcorner.com/article/introduction-to-azure-web-app-service/

Explore how to deploy your ASP.NET Core MVC application to the cloud using Azure Web App Service, a fully managed PaaS (Platform as a Service) by Microsoft. With built-in support for C#, .NET, REST API hosting, continuous deployment, and cross-platform tools like Visual Studio, this guide walks through setting up your publish profile, choosing a hosting plan, and launching a secure, scalable web app in just a few steps — ideal for modern cloud-native application development.