如何在 Prism 中注册一个 class 到 IoC

Question

我用 WPF 写了一个应用程序。我将 Prism 库与 IoC 一起使用 Prism.DryIoC。我有一个 AppDbContext.cs class 来声明数据库的连接字符串（这里是 MongoDB）

public class AppDbContext : BaseMongoRepository
{
    public AppDbContext(string connectionString, string databaseName = null) : base(connectionString, databaseName)
    {
    }
}

我有一个 class MyService.cs 使用 AppDbContext class，我在构造函数中声明。 public class 我的服务：我的服务 { 私人 AppDbContext _dbContext;

    public IdentifierRepository(AppDbContext dbContext)
    {
        _dbContext = dbContext;
    }

    public void AddCustomer(Customer model)
    {
        // Some code....
        _dbContext.Add(model);
    }
}

在App.xaml.csclass我覆盖了方法

    protected override void RegisterTypes(IContainerRegistry containerRegistry)
{
    containerRegistry.RegisterSingleton<IAuthenticationService, AuthenticationService>();


    // MongoDB
    var connectionString = SharedCommon.LocalAppSettings.Database.ConnectionString;
    var database         = SharedCommon.LocalAppSettings.Database.DatabaseName;

    // How to register class MyService.cs here?
    // I dont known.
    containerRegistry<MyService>(() => new MyService(new AppDbContext(connectionString, database))); // Wrong code
}

Answer 1

您可以找到所有的注册方式here。

对于单例 MyService:

var myService = new MyService(new AppDbContext(connectionString, database)));
containerRegistry.RegisterInstance(myService);

对于多个实例，您可以改用工厂。

public class MyServiceFactory
{
    private readonly AppDbContext appDbContext;
    public MyServiceFactory(AppDbContext appDbContext)
    {
        this.appDbContext = appDbContext;
    }

    public MyService Create() => new MyService(appDbContext);
}

注册工厂实例:

var context = new AppDbContext(connectionString, database);
var factory = new MyServiceFactory(context);

containerRegistry.RegisterInstance(factory);

然后创建您的服务实例：

var factory = container.Resolve<MyServiceFactory>();
var service = factory.Create();

如何在 Prism 中注册一个 class 到 IoC

How to register a class to IoC in Prism

c#

wpf

dependency-injection

prism

dryioc