AMessanger-Avalonia-Client/AMessanger/App.axaml.cs

using Avalonia;
using Avalonia.Controls.ApplicationLifetimes;
using Avalonia.Markup.Xaml;
using AMessanger.ViewModels;
using AMessanger.Views;
using Microsoft.Extensions.DependencyInjection;

namespace AMessanger;

public partial class App : Application
{
    public override void Initialize()
    {
        AvaloniaXamlLoader.Load(this);
    }

    public override void OnFrameworkInitializationCompleted()
    {
        if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
        {
            desktop.MainWindow = new MainWindow
            {
                DataContext = Program.Services.GetRequiredService<MainViewModel>(),
            };
        }

        base.OnFrameworkInitializationCompleted();
    }
}