C#•3mo ago

ILogger question.

How does ILogger's LogInformation() work? I thought it was to output to a console, debug output or anywhere I wanted? I had to supply a Debug.WriteLine() just to see something.

using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;
using Microsoft.Extensions.Logging;
using System.Diagnostics;
using TitanStudio.Core.Interfaces;

namespace TitanStudio.Core.ViewModel;
public partial class MainViewModel : ObservableObject, IMainViewModel
{
    private readonly ILogger<MainViewModel> _logger;
    
    // Only need this if you use private methods!!!
    // Example: void IMainViewModel.Test() => Test();

    public MainViewModel(ILogger<MainViewModel> logger)
    {
        _logger = logger;
    }

    [RelayCommand]
    public void Test()
    {
        _logger.LogInformation("TEST");
        Debug.WriteLine(":)");
    }
}

using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;
using Microsoft.Extensions.Logging;
using System.Diagnostics;
using TitanStudio.Core.Interfaces;

namespace TitanStudio.Core.ViewModel;
public partial class MainViewModel : ObservableObject, IMainViewModel
{
    private readonly ILogger<MainViewModel> _logger;
    
    // Only need this if you use private methods!!!
    // Example: void IMainViewModel.Test() => Test();

    public MainViewModel(ILogger<MainViewModel> logger)
    {
        _logger = logger;
    }

    [RelayCommand]
    public void Test()
    {
        _logger.LogInformation("TEST");
        Debug.WriteLine(":)");
    }
}

Thank you.

11 Replies

Sehra•3mo ago

are you following https://medium.com/@shalahuddinshanto/dependency-injection-in-wpf-a-complete-implementation-guide-468abcf95337 ? add package Microsoft.Extensions.Logging.Debug (or .Console if you want it there), then on the AddLogging(), chain .AddDebug() or .AddConsole()

Temporal NightmareOP•3mo ago

Ohh ok. What if I wanted to output to a ListBox?

Sehra•3mo ago

think you'd have to write your own ILoggerProvider for that

Temporal NightmareOP•3mo ago

ah, that I'll suck with probablyh but i can use console for now, thank you Also, I put the ILogger on my .Core project and not Wpf, does it matter?

Temporal NightmareOP•3mo ago

Sehra•3mo ago

your ILogger? it's provided by the package Microsoft.Extensions.Logging (actually .Abstractions but it's transitive)

Temporal NightmareOP•3mo ago

Ah okay, removed then.

Sehra•3mo ago

for the core, you can add package Microsoft.Extensions.Logging.Abstractions if all you want is ILogger

Temporal NightmareOP•3mo ago

Yep, I got that installed too. I'm trying to figure out how to load a View via this DI thing, confused. besides the main view of course I already registered everything

Sehra•3mo ago

i don't really do any wpf so ui people might know

Temporal NightmareOP•3mo ago

It's okay, I think I'm close to solving it. Thank you for your help though 🙂

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