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We just upgraded all but one of our web app projects from .NET Core 3.1 projects to .NET 6 in our solution. These were ASP.NET Core 3.1 projects using Razor. Here are the results we're seeing with respect to Hot Reload:

  1. The .NET 6 projects hot reload doesn't seem to work. Hot Reload is enabled, but our Front End is never updated. Refreshing the page doesn't seem to show the updates either.
  2. The ASP.NET Core 3.1 project hot reload is working as expected.

When we run these projects in VS 2019, we can refresh the pages in any of our projects and we will see the updates. Are there some settings that we're missing here?

user3002092
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    What exactly is not reloading? If it is razor views - try answers for [this question](https://stackoverflow.com/a/65438390/2501279). – Guru Stron May 19 '22 at 13:21
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    You're a life saver! This is our solution. We hadn't updated RazorRuntimeCompilation and we needed to and one setting in launchsettings.json. This has been the reason why we've been hesitant to move onto VS 2022. Thank you! – user3002092 May 19 '22 at 16:50

3 Answers3

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Big Thank you to Guru Stron! His comment in my question directed me to where I should've looked. We had to:

  1. Update our Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation Nuget package
  2. Add this to our launchsettings.json: ASPNETCORE_HOSTINGSTARTUPASSEMBLIES to "Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation"

This answer solved our issue - .NET Core MVC Page Not Refreshing After Changes

user3002092
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First, Make sure all options are selected

enter image description here

In Hot reload, You can select Hot Reload On File Save(Not selected by default), Then VS will hot reload after you ctrl+s;

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Demo

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Xinran Shen
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I had the same issue and after trying everything including rolling back the version and adding .AddRazorRuntimeCompilation() to Program.cs still didn't work. What I did was literally re-check the "Hot reload on file save" option when you click on the down arrow to bring up the menu on the hot reload button from the menu bar. That did the trick for me.

Hopefully this works for you.

Jeremy Caney
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alex cardoso
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