A practitioner's benchmark comparing EF Core with redb Pro on the same Employee object: the EF Core side needs 54 tables, 59 foreign keys and 31 `Include` chains, while redb keeps the graph in a single class. The article argues the gap comes from how many tables must be reassembled into a business object, and walks through query-shape and index changes in recent redb releases.
Xamarin support ended on May 1, 2024, and its final releases no longer meet store requirements, so existing Xamarin apps cannot ship updates. This guide walks through moving to .NET MAUI 10 on .NET 10, comparing the GitHub Copilot modernization agent in Visual Studio with starting a new single-project app. Layouts, custom renderers and third-party packages are called out as the bulk of the work.
A C# event only fixes a delegate signature; it says nothing about what happened, when subscribers run, or what an empty subscriber list means. Nick Cosentino separates notification events (a past-tense fact) from decision events (a future-tense question) and argues for stable payloads, a single-owner callback and honest failure boundaries.
The third instalment of a C# learning series walks through generics, the collection types, delegates and lambdas with closures, events, LINQ and iterators. Each topic gets a short definition, an analogy and a sample, followed by six practice projects with full solutions and a rationale for the design choices. All code targets .NET 8 or later with top-level statements, so each solution runs in a fresh console project.
Microsoft is removing low-trust authorization for SharePoint Add-ins in SharePoint Server Subscription Edition, with support ending January 12, 2027. The January 2027 public update disables such add-ins by default, so provider-hosted add-ins and AppRegNew.aspx app-only principals must be replaced or retired first.
Microsoft added installable builder skills for the Agent Framework in .NET and Python, giving coding assistants Microsoft-maintained guidance on choosing a pattern and wiring tools, sessions, workflows and hosting. They are development-time skills, installed with GitHub CLI or the skills CLI, and the .NET one covers AIAgent, Microsoft.Extensions.AI, dependency injection and ASP.NET Core hosting.
In this bonus post to his async/await series, Gérald Barré argues that the standard advice to prefer async file I/O only tells half the story. For single-operation latency the synchronous path measures faster, while the real advantage of async shows up as scalability when many operations run concurrently. The post also looks at buffer size and FileOptions flags as tuning knobs.
A step-by-step guide to embedding a Word-like DOCX editor in a React app using the TX Text Control React component, with an ASP.NET Core service running the word processing engine behind a WebSocket. It covers the hosted service, middleware and CORS setup, a Base64 document endpoint, and loading the file with loadDocument().
A C# Corner walkthrough builds a working RAG pipeline in a small console app on Microsoft.Extensions.AI, then goes past the demo: hybrid search, reranking, GraphRAG, agentic retrieval and evaluation. It is a compact map of the design decisions that decide whether a grounded assistant is trustworthy.
Once a minimal API endpoint accumulates half a dozen query values, the handler signature becomes unreadable and injected services get lost in the crowd. The author moves those values into a [FromQuery]-annotated record struct behind [AsParameters], then compares curl output and the generated OpenAPI document to prove nothing changes for callers.
To validate a Game Boy emulator against real games you first need ROMs. In this installment of the dotnetpro series, Heiner Palmen wires an Arduino Mega 2560 to a cartridge slot and combines a small firmware, gb_reader, with a C# Dumper to read real cartridges into a .gb file.
Akbura 12.0.4-beta.6, an experimental declarative markup language and compiler for Avalonia, cuts cold code generation in the FeatureGallery project from 15.31s to 6.06s and reduces allocations by roughly 69%. The headline feature is ${x.bind ...}, which turns strongly typed C# expressions written in markup into one-way reactive bindings that track nested property changes.
Wolverine has treated scheduled work as an ordinary message since 6.34, and 6.52/6.61 split schedules into a durable inbox path and a timer-agent path depending on how often they fire. CritterWatch 1.2 adds fleet-wide visibility to pause, resume and trigger every schedule, including over MCP.
The .NET team has been experimenting with shipping agent skills inside NuGet packages: SKILL.md files travel with the package and land on disk through dotnet restore, so an agent reads documentation for the exact version in use. Richard Lander reports that frontier models already reverse-engineer metadata well, that the win is mostly efficiency, and that markdown inside packages adds a new threat vector.
A deep dive into the last two caching options in .NET: FusionCache, which adds a Redis backplane, fail-safe and eager refresh on top of the hybrid L1+L2 model, and Output Cache, which stores full HTTP responses with tag-based eviction. The article covers the packages, DI wiring and the pitfalls of each.
Andrew Lock walks through the three LazyThreadSafetyMode values for Lazy<T> and shows how each interacts with exceptions thrown by the factory method. Because exception caching is tied to the thread-safety mode rather than being a separate switch, a Lazy<T> that fails once can stay permanently broken in two of the three modes.
This guide walks through issuing signed 15-minute access tokens for ASP.NET Core Identity users with JsonWebTokenHandler and validating them strictly for issuer, audience, lifetime and signature on the JwtBearer side. It also flags the common traps: claim type mapping that hides sub, calling AddIdentity in an API, and authentication middleware registered in the wrong order.