[Question] Dependency Injection error when using Host.CreateDefaultBuilder with RunCommandLineApplicationAsync

[Soham Dasgupta]

I am trying to use the RunCommandLineApplicationAsync with Host.CreateDefaultBuilder, but the program errors out saying that ILogger is not configured, which is weird because ILogger is already comes configured with CreateDefaultBuilder. Am I doing something wrong here?

Here is my main -

internal static class Program
{
	internal static async Task Main(string[] args)
	{
		var host = CreateHostBuilder(args);

		await host.RunCommandLineApplicationAsync<App>(args, (appcon) =>
		{
			appcon.Conventions
			.UseDefaultConventions()
			.UseConstructorInjection();
		});
	}

	internal static IHostBuilder CreateHostBuilder(string[] args)
	{
		return Host.CreateDefaultBuilder(args)
		.ConfigureServices((hostContext, services) =>
		{
		   
		});
	}
}

and here is the App.cs -

internal class App
{
	private readonly ILogger _logger;

	public App(ILogger logger)
	{
		_logger = logger;
	}

	private void OnExecute()
	{
		_logger.LogInformation("Executed");
	}
}

[Nate McMaster]

I think this matches your problem: https://stackoverflow.com/a/57590076

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