razor

Blazor's Razor compiler emits RZ10012 when a PascalCase tag has no matching component type in scope. Add @using for the component's namespace in _Imports.razor, or @namespace in the component, then rebuild.

Visual Studio 2026 adds HotReloadAutoRestart, a project-level opt-in that restarts the app when a rude edit would otherwise end the debug session. It is especially useful for Razor and Aspire projects.