WPF App

主机配置

Microsot.Extension.Hosting

一键启动（配置文件、依赖注入，日志）

// App.xaml.cs 中定义 IHost
private readonly IHost _host = Host.CreateDefaultBuilder().ConfigureAppConfiguration(c =>
{
    _ = c.SetBasePath(Environment.CurrentDirectory);
    //  配置文件
    // _ = c.AddJsonFile("appsettings.json");
    _ = c.AddIniFile("appsettings.ini");
}).ConfigureServices((c, s) =>
{
    // 后台服务 BackgroundService
    _ = s.AddHostedService<ApplicationHostService>();
    _ = s.AddHostedService<WorkerService>();

    // 视图
    _ = s.AddSingleton<MainWindow>();
    _ = s.AddSingleton<ViewModels.MainWindowViewModel>();
    _ = s.AddSingleton<ModuleForLogView>();
    _ = s.AddSingleton<ViewModels.ModuleForLogViewModel>();
    
    // 依赖注入
    _ = s.AddScoped<IMonkey, Monkey>();
}).ConfigureLogging((c, l) =>
{
    l.ClearProviders();
    // Logging 自带的仅能输出至控制台
    // NLog 扩展 记录到文件
    l.AddNLog();
}).Build();

构造函数注入，读取配置信息

更丰富的注入还需要 Autofac
配置文件支持 json，ini 等，使用_config[“A:B”]写法读取配置项

private readonly IMonkey _monkeyService;
private readonly ILogger<ModuleForLogViewModel> _logger;
private readonly IConfiguration _config;
public ModuleForLogViewModel(IMonkey monkeyService, ILogger<ModuleForLogViewModel> logger, IConfiguration config)
{
    _monkeyService = monkeyService;
    _logger = logger;
    _config = config;
    // 读取配置
    var s = _config["项目:年份"];
    _logger.LogInformation(s);
    MessageBox.Show(_monkeyService.Act());
}