dotnet watch run -c $(Configuration) with hot reload

Question

I want to launch my Blazor app with specific configuration and have hot-reload enabled.

When I launch with:

dotnet watch

Hot reload is enabled and everything it's ok.

When I lanch with:

dotnet watch run -c Simulation

Hot reload is not active and the app rebuild when a file is changed.

I have try to launch with:

dotnet watch -c Simulation

But it's return "watch : Exited with error code 1".

How launch my app with wanted configuration and hot-reload ?

EDIT:

My launch profile from launchSettings.json file:

 "Dotnet Watch": {
  "commandName": "Executable",
  "executablePath": "C:\\Program Files\\dotnet\\dotnet.exe",
  "commandLineArgs": "watch run -c $(Configuration)",
  "hotReloadProfile": "aspnetcore",
  "workingDirectory": "$(ProjectDir)",
  "launchUrl": "https://localhost:5001;http://localhost:5000",
  "environmentVariables": {
    "ASPNETCORE_ENVIRONMENT": "Development"
  }
}

Adding "hotReloadProfile": "aspnetcore" doesn't work.

And my dotnet version is :

6.0.300-preview.22154.4

EDIT2:

Temporary I use environment variable and not project configurations to switch between Simulation profile and others, but it's strange to not have any solution's to have hot reload with a specific profile. Nothing on the web about that.

Answer 1

According to this article, the way to go is to add "hotReloadProfile": "aspnetcore" to your launchSettings.json like so:

{
  "profiles": {
    "dotnet": {
      "commandName": "Project"
    }
  }
}

And debug your app using dotnet watch run command.

Edit:

As of dotnet sdk version 6.0.300-preview.22204.3 this issue has been addressed and the configuration shown at your first edit works with both Visual Studio and JetBrains Rider. Tested on a vanila project with a new dummy configuration called Simulation copied directly from debug.

That said, it seems like dotnet cli cannot call this launch profile

PS P:\Path\To\Project> dotnet run --launch-profile "Dotnet Watch"
The launch profile "Dotnet Watch" could not be applied.
The launch profile type 'Executable' is not supported.

---

My Full launchSettings.json:

{
  "profiles": {
    "HotRelaodTests": {
      "commandName": "Project",
      "dotnetRunMessages": true,
      "launchBrowser": true,
      "applicationUrl": "https://localhost:5001;http://localhost:5000",
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      }
    },
    "Dotnet Watch": {
      "commandName": "Executable",
      "executablePath": "C:\\Program Files\\dotnet\\dotnet.exe",
      "commandLineArgs": "watch run -c $(Configuration)",
      "workingDirectory": "$(ProjectDir)",
      "launchUrl": "https://localhost:5001;http://localhost:5000",
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      }
    }
  }
}