Swagger UI used to ship by default with ASP.NET Core API projects, but recent .NET versions replaced it with a bare OpenAPI document. This post compares Swagger and Scalar as documentation UIs, walks ...

In this post I look at the new experimental support for DBSC provided by the Microsoft.AspNetCore.Authentication.DeviceBoundSessions package

AI hype is everywhere, but where do you start with .NET? In this beginner-friendly post, we build a simple RAG pipeline in an ASP.NET Core Web API using keyword matching instead of embeddings, coverin...

The Model Context Protocol (MCP) gives AI assistants a standardized way to interact with software. Learn how to construct your first MCP server in ASP.NET Core, expose C# tools using standard attribut...

Multiple line secrets or configuration do not work in Aspire per default. An example of this is using a PEM file for certificates. This posts shows how the multiple line configuration parameters ca…

Learn how to build a local RAG application in C# using Ollama and Qdrant, from architecture and embeddings to vector search and private AI setup.

In this post I describe the new Cross-Site Request Forgery protection added to ASP.NET Core that uses Fetch Metadata HTTP headers instead of antiforgery tokens

How do you get AI to iteratively work on your feature without losing track of its progress? Give it a way to track its progress!

Learn how OpenAPI works in ASP.NET Core 10, the difference between OpenAPI and Swagger, native document generation, Scalar UI integration, benefits, limitations, and a practical Minimal API example.

Learn how to implement the Idempotency Pattern in ASP.NET Core APIs to prevent duplicate requests, handle retries safely, and build more reliable applications.

Learn how to properly implement a custom loading indicator and why professional UI libraries can provide the best user experience.

Learn how A2UI enables AI systems to generate interactive, dynamically generated Blazor interfaces and how Progress Telerik UI for Blazor will help.

🔰 Referencing and operating DOM elements in Blazor In Blazor, you can reference a DOM...

Learn how to implement the OAuth 2.0 Device Authorization flow to authorize a .NET console application built with C#.

A 2026 follow-up to my 2021 Blazor WASM bet: per-route render modes, Lighthouse 100 on SEO routes, and why I'd choose Blazor again building MinCalc solo.

An Excel file is a type of spreadsheet document created using Microsoft Excel, designed to organize, analyze, and store data in a structured format. It consists of worksheets made up of rows and colum...

I was recommended NCronJob for implementing a background worker in ASP.NET Core and so I decided to give it a try, read the docs and learn this. This NuGet package is open source and works great. I…

Learn how to build high-throughput .NET APIs for 1M requests/min using EF Core optimizations, Dapper, database indexing, and caching tactics.

While ASP.NET Core applications typically run from the root folder, some scenarios—such as hosting multiple blogs under a single domain—require running from a subfolder. This post explains how to conf...

Learn how to use _Imports.razor to set a default base component for all Razor components in a Blazor application without repeating @inherits in every file.

In this post I discuss the new Web Worker template available in .NET 11 for running CPU intensive tasks without blocking the UI

Responsive design is the reason applications feel polished and user-friendly. Learn how to build responsive Blazor web applications using CSS media queries.

Bot detection should not stop at allow/block. This post shows how StyloBot's classification result becomes application logic in ASP.NET - tag helpers in...

Configurable token lifetimes in the Microsoft identity platform went GA and I thought I would look at implementing this using a .NET console application using Microsoft Graph . This article looks a…

Production-grade API key authentication in ASP.NET Core .NET 10. Hashed keys, DB-backed store, AuthenticationHandler, decision matrix, full source repo.

Introduction When building modern APIs, one thing is certain: HTTP calls will fail. It does not matter how well your code is written. Networks are unreliable, external services can be slow, and tempor...

In the world of ASP.NET and .NET, there is a quiet but persistent instinct: the desire to control how things come into existence. Object creation, in particular, feels like something that must be care...

Master HybridCache in ASP.NET Core .NET 10. BenchmarkDotNet results, stampede protection demo, tag-based invalidation, Redis L2 setup, and migration from IDistributedCache.

🔰 Introduction If you're building a general-purpose Razor component in Blazor, you've...

Introduction When building modern APIs, one thing is certain: HTTP calls will fail. It does not matter how well your code is written. Networks are unreliable, external services can be slow, and tempor...

Learn how to upgrade your .NET MAUI and Blazor Hybrid apps to .NET 9 with this step-by-step guide. Discover new features, improvements, and real-world examples from CodeSwissKnife app migration

OpenHabitTracker is a free, open source app for taking Markdown notes, planning tasks, and tracking...

Aspire 13.2 ships aspire docs, a CLI for official aspire.dev docs from your terminal, with the same source of truth available to AI skills and automation.

By the end of this post, you'll have a working login/logout flow backed by Keycloak, running locally via Aspire and deployable via Docker Compose.

Storing files on an audio cassette using tape recorder - dmitry-pavlov/audio-cassette-backup

Protect your AI tools with Model Context Protocol security. Learn to build a secure C# MCP server using OAuth 2.1 and Auth0.

Learn how to implement multi-tenant rate limiting in .NET 10 and C# 14. Master native partitioning to prevent noisy-neighbor issues in SaaS.

Learn about the new features in ASP.NET Core in .NET 10.

Explore microservices from an architectural perspective and learn how to build a feedback microservice in ASP.NET Core.

Look at a typical enterprise ASP.NET Core application, and you often see the same pattern: Controllers validating requests, calculating totals, and applying discounts EF Core entities that are little ...