Is it possible to change .cshtml View and see the changes instantly using .NET Core?

Question

Context

In my .NET Framework 4.x ASP.NET MVC projects, when using the Visual Studio IDE, it was possible to edit a .cshtml view, save, then press ctrl+F5 in the browser and see the change immediately.

This seems to be no longer work in ASP.NET Core applications (using Visual Studio 2019 and .NET Core 3 Preview 5).

Question

Is this feature missing in ASP.NET Core? Is this a preview issue? Or am I missing something?

Answer 1

This is something that is no longer enabled by default as of ASP.NET Core 3, but it can be re-enabled as documented here:

Runtime compilation is enabled using the Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation package. To enable runtime compilation, apps must:

• Install the Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation NuGet package.

• Update the project's Startup.ConfigureServices method to include a call to AddRazorRuntimeCompilation:

   services
       .AddControllersWithViews()
       .AddRazorRuntimeCompilation();