如何运行Winforms与后台服务和依赖注入?

Question

我正在尝试启动BackgroundService分配给一个服务。HostedServiceIHostBuilder.

IHostBuilder定义:

private static IHostBuilder CreateHostBuilder()
{
return Host.CreateDefaultBuilder()
.ConfigureServices(services =>
{
services.AddHostedService<LicenseControl>();
services.AddTransient<Database>();
services.AddTransient<CoreLicense>();
services.AddSingleton<FormSelector>();
services.AddTransient<ClienteForm>();
services.AddTransient<GastoForm>();
services.AddTransient<IngredienteForm>();
services.AddTransient<ProdutoForm>();
services.AddTransient<ReceitaForm>();
services.AddTransient<RelatorioForm>();
services.AddTransient<VendaForm>();
services.AddTransient<MainForm>();
services.AddTransient<ConfiguracoesForm>();
services.AddTransient<UsuarioForm>();
services.AddSingleton<AuthenticationForm>();

services.AddScoped<IBridgeRepository, BridgeRepository>();
services.AddScoped<IClienteRepository, ClienteRepository>();
services.AddScoped<IGastoRepository, GastoRepository>();
services.AddScoped<IIBGERepository, IBGERepository>();
services.AddScoped<IIngredienteRepository, IngredienteRepository>();
services.AddScoped<IProdutoRepository, ProdutoRepository>();
services.AddScoped<IReceitaRepository, ReceitaRepository>();
services.AddScoped<IVendaRepository, VendaRepository>();
services.AddScoped<IUsuarioRepository, UsuarioRepository>();
services.AddLogging(
builder =>
{
builder.AddFilter("Microsoft", LogLevel.Warning)
.AddFilter("System", LogLevel.Warning)
.AddFilter("NToastNotify", LogLevel.Warning)
.AddConsole();
}
);
});
}

，但我发现唯一可能的方式来启动hostdservice

await CreateHostBuilder().Build().RunAsync();   

最后，问题发生了，因为在这种方法中，线程锁定在那一行，不允许我运行通用块代码来启动Form本身:

Application.Run(new MainForm());

如果我运行Form，同样会发生首先，线程会锁定那一行，不让我调用RunAsync的HostBuilder.

我还试图声明所有HostBuilder作用域，并启动BackgroundService在它的构造函数上，但是这样我就不能在一个actor上运行Async方法了。

我目前正在尝试(但尚未成功)是调用表单没有应用程序。运行(仍然不知道这样做的所有副作用)，所以我可以运行HostBuilder下一个。

我整个程序类:

static class Program
{
[STAThread]
private static async Task Main()
{
Application.SetHighDpiMode(HighDpiMode.SystemAware);
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);            
var host = CreateHostBuilder().Build();
host.Services.GetRequiredService<AuthenticationForm>().Show();
await host.RunAsync();
}
private static IHostBuilder CreateHostBuilder()
{
return Host.CreateDefaultBuilder()
.ConfigureServices(services =>
{
services.AddHostedService<LicenseControl>();
services.AddTransient<Database>();
services.AddTransient<CoreLicense>();
services.AddSingleton<FormSelector>();
services.AddTransient<ClienteForm>();
services.AddTransient<GastoForm>();
services.AddTransient<IngredienteForm>();
services.AddTransient<ProdutoForm>();
services.AddTransient<ReceitaForm>();
services.AddTransient<RelatorioForm>();
services.AddTransient<VendaForm>();
services.AddTransient<MainForm>();
services.AddTransient<ConfiguracoesForm>();
services.AddTransient<UsuarioForm>();
services.AddSingleton<AuthenticationForm>();

services.AddScoped<IBridgeRepository, BridgeRepository>();
services.AddScoped<IClienteRepository, ClienteRepository>();
services.AddScoped<IGastoRepository, GastoRepository>();
services.AddScoped<IIBGERepository, IBGERepository>();
services.AddScoped<IIngredienteRepository, IngredienteRepository>();
services.AddScoped<IProdutoRepository, ProdutoRepository>();
services.AddScoped<IReceitaRepository, ReceitaRepository>();
services.AddScoped<IVendaRepository, VendaRepository>();
services.AddScoped<IUsuarioRepository, UsuarioRepository>();
services.AddLogging(
builder =>
{
builder.AddFilter("Microsoft", LogLevel.Warning)
.AddFilter("System", LogLevel.Warning)
.AddFilter("NToastNotify", LogLevel.Warning)
.AddConsole();
}
);
});
}
}

考虑到。net 5和忽略BackgroundWorker组件，这个问题的解决方法是什么?

Answer 1

Nkosi的解决方案，评论:

创建另一个托管服务以这种方式调用Application.Run，当您运行主机时，UI方面和后台worker托管服务将启动

class StartProgram : BackgroundService
{
private readonly IServiceProvider _services;
public StartProgram(IServiceProvider services)
{
this._services = services;
}
protected override Task ExecuteAsync(CancellationToken stoppingToken)
{
Application.SetHighDpiMode(HighDpiMode.SystemAware);
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run((AuthenticationForm)_services.GetService(typeof(AuthenticationForm)));
return Task.CompletedTask;
}
}

和程序。cs:

static class Program
{
[STAThread]
private static async Task Main()
{
await CreateHostBuilder().Build().RunAsync();
}
private static IHostBuilder CreateHostBuilder()
{
return Host.CreateDefaultBuilder()
.ConfigureServices(services =>
{
services.AddHostedService<LicenseControl>();
services.AddHostedService<StartProgram>();
#region ETC...
});
}
}