Is live reload with in-process aspnet core 3 possible?

Question

I recently upgraded an .Net Framwork AspNet MVC app to a AspNet Core 3 MVC app and I'd like the ability to change a view, save, and refresh my browser window to see the changes. Now it appears I have to do a build every time before I can see any changes. Is there a way to change this behavior?

This is being hosted under IIS 10

score 61 · Accepted Answer · answered Oct 03 '19 at 02:43

61

As far as I know, the runtime compilation could just work in the develop environment. That means you couldn't use it in the production environment(which is hosted on the IIS).

If you change the visual studio's debug environment to IIS, it will stil work.

Besides, RuntimeCompilation is not a build-in feature in the asp.net core 3.0.

If you want to use it, I suggest you could try to install the package Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation and then configure AddRazorRuntimeCompilation in Startup.cs like

public void ConfigureServices(IServiceCollection services)
{
    services.AddControllersWithViews().AddRazorRuntimeCompilation();
}

answered Oct 03 '19 at 02:43

Brando Zhang

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This was it! Thanks Brando! – user3953989 Oct 04 '19 at 13:37
Works for MVC as well. – Artur INTECH Jul 29 '20 at 12:52
Worked as expecting. Thank you – Yawar Ali Oct 18 '20 at 12:12
Like a charm, thank you! – Brendan Sluke Nov 01 '21 at 23:38
An important note... when I use Hot Reload with IIS, I have to manually refresh the browser after the Hot Reload, where IIS Express refreshes automatically. – Cryptc Dec 02 '21 at 17:07
With dotnet 3.1 you'll additionally need to add to your csproj. – SalkinD Jun 01 '22 at 08:48

score 9 · Answer 2 · answered Jun 13 '20 at 17:13

There is a new way of doing this for 3.1, taken from: https://learn.microsoft.com/en-us/aspnet/core/mvc/views/view-compilation?view=aspnetcore-3.1

Add the package at csproj

<PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation" Version="3.1.3" />

Then at launch.json, add a new environment variable

"ASPNETCORE_HOSTINGSTARTUPASSEMBLIES": "Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation"

Patrick Szalapski · Answer 3 · 2020-04-08T18:05:21.110

8

I was very happy to implement Westwind.AspnetCore.LiveReload per this blog post. It was quite easy and worked better than BrowserSync.

edited Apr 08 '20 at 18:05

answered Feb 21 '20 at 00:54

Patrick Szalapski

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Yes, finally something that works and easy! You shoulld add to your answer the mains steps to do so in case the link goes off – Daniel Apr 06 '20 at 21:19
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I added a link to the actual package. If that goes down, then we probably shouldn't use this anyway. – Patrick Szalapski Apr 08 '20 at 18:07

score 0 · Answer 4 · answered Jun 01 '22 at 08:47

After some search I found a very simple solution:

Add following reference to csproj:

<PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation" Version="3.1.3" />

Add AddRazorRuntimeCompilation() to your services configuration

services.AddControllersWithViews().AddRazorRuntimeCompilation();

Is live reload with in-process aspnet core 3 possible?

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