#DevtoCsharp

An interpolated string has no IL of its own — the compiler picks one of three completely different lowerings depending on your target framework, the hole types, and whether a method opted into a handler.…

Welcome to our weekly log for the Supabase .NET SDK 🎉 For the 4th week in a row, the repository had...

SharpCell.Grid running in the browser. Try it with your own .xlsx: live demo Disclosure: SharpCell's...

Junior EF Core interviews ask "what is a DbContext." Senior interviews ask why your dashboard fires...

Recently, I was checking the memory usage of a server running several ASP.NET Core...

Every developer has heard the advice: "Don't Repeat Yourself." But what if following that principle...

Part 3 built the content. Ordering dispatches OrderCreated with the order facts it owns,...

The same `x => x + 1` compiles two completely different ways depending on the type it is assigned to. As a delegate it is a hidden method and an ldftn; as an Expression > it is a nest of Expression.Parameter, Expression.Constant, Expression.Add and…

An empty form field looks unimportant. In ordinary application logic, treating an empty value like a...

ASP.NET Core wires up auth middleware but no login, register, refresh or 2FA endpoints. AuthEndpoints 4 adds them with cookies, JWT and passkeys.

A Cache-Control header is a note to the browser; it does nothing on the server. Here is a hit-counter experiment showing why output caching is the one that actually stops the work.

A paging bug where page 2 kept serving page 1's cached data, traced to one line: SetVaryByQuery replaces the default query-vary rule, it doesn't add to it.