Visual Studio watch run settings, add this parameter to profiles in launchsettings.json

Visual Studio watch run settings

"Watch": {
      "executablePath": "C:\\Program Files\\dotnet\\dotnet.exe",
      "commandLineArgs": "watch run",
      "launchBrowser": true,
      "commandName": "Project",
      "launchUrl": "http://localhost:5000",
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      }
    }