Apparently, a relatively recent decision was made to change how application host construction is done. The "old" way was a series of chained method calls on classes that implement the IHostBuilder interface. Apparently, there were issues with that, and so a complete cut was made—a new HostApplicationBuilder class was created which does not implement IHostBuilder.
The current suggested documentation for hosting a Windows Service in .NET Core (https://learn.microsoft.com/en-us-dotnet/core/extensions/windows-service) recommends using something like this:
var hostBuilder = Host.CreateApplicationBuilder();
hostBuilder.Services.AddWindowsService();
hostBuilder.Services.AddSingleton<YourService>();
hostBuilder.Services.AddHostedService<WindowsBackgroundService>();
var host = hostBuilder.Build();
host.Run()
So, translating this into System.CommandLineBuilder, I tried:
var rootCommand = new RootCommand("The root command.");
var commandLineBuilder = new CommandLineBuilder(rootCommand)
.UseDefaults()
.UseHost(Host.CreateApplicationBuilder /* BOOM: Not an IHostBuilder!! */, hostBuilder => {
// Configure your host here...
})
.Build();But as you can see, with the new "recommended" pattern, this fails because there is no overload of UseHost() that accepts an HostApplicationBuilder builder.
Apparently, a relatively recent decision was made to change how application host construction is done. The "old" way was a series of chained method calls on classes that implement the
IHostBuilderinterface. Apparently, there were issues with that, and so a complete cut was made—a newHostApplicationBuilderclass was created which does not implementIHostBuilder.The current suggested documentation for hosting a Windows Service in .NET Core (https://learn.microsoft.com/en-us-dotnet/core/extensions/windows-service) recommends using something like this:
So, translating this into System.CommandLineBuilder, I tried:
But as you can see, with the new "recommended" pattern, this fails because there is no overload of
UseHost()that accepts anHostApplicationBuilderbuilder.