.NET的核心依赖注入 [英] .net-core Dependency Injection

问题描述

我有我要为DI注册一个通用存储库，它实现了一个接口IRepository

I have a Generic repository which I want to register for DI, it implements an interface IRepository.

通常我会创建这样的一个实例：

Normally I would create an instance of it like this:

IRepository repo = new Repository<Order>();

不过我想起床的速度在.NET 5领先发布，并希望得到这与DI工作，我已经使出了以下内容：

However I am trying to get up to speed in .net 5 ahead of release and want to get this working with DI, I have resorted to the following :

services.AddTransient<DAL.IRepository<Models.Order>, DAL.Repository<Models.Order>>();

不过，这种感觉错了，我不想在那里1 50+线每个班在我的模型......

But this feels wrong, I don't want 50+ lines in there one for each of the classes in my model...

我不能在网上找到任何有关这一点，我知道它有可能与其他IOC容器..但因为这是一个学习项目，我不想用另一个容器而言，我的目标是什么，这一切以.net5s机容器。

I cannot find anything online about this, I know its possible with other ioc containers.. but as this is a learning project I dont want to use another container, Im aiming to do it all with .net5s native container.

推荐答案

在一些回去和向前的意见其他答案我有一个有效的解决方案，它可能不是最好的方式，但它的工作原理。 。生病更新，如果我再一次找到实现这个更好的办法

After some back and forwards in the comments to other answers I have a working solution, It might not be the best way but it works. Ill update again if I find a better way to implement this.

这两个问题我已经是：需要注册一个通用接口，这里的问题是浓度的失误我的一部分。我有错误的语法登记泛型类型这当然是：

The two issues I had were : Needed to register a generic interface, the issue here was a lapse in concentration on my part.. I had the syntax wrong for registering a generic type which of course is :

services.AddTransient(typeof(IRepository<>), typeof(Repository<>));

第二个问题是，我有一个包含50+这我想注册不同型号的大会，方式，我解决了这个是写，我可以说我想要注册的命名空间一起传递组件列表的方法，它遍历符合标准，并在DI容器注册它们。任何类型

The second issue was that I have an assembly which contains 50+ different models which I wanted registered, The way that I addressed this was to write a method that I can pass a list of assemblies to along with the Namespace that I want to register and it iterates over any types that match the criteria and registers them in the DI container.

public void RegisterModels(IServiceCollection services, string[] Assemblies, string @NameSpace)
    {
        foreach (var a in Assemblies)
        {
            Assembly loadedAss = Assembly.Load(a);

            var q = from t in loadedAss.GetTypes()
                    where t.IsClass && !t.Name.Contains("<") && t.Namespace.EndsWith(@NameSpace)
                    select t;

            foreach (var t in q.ToList())
            {
                Type.GetType(t.Name);
                services.AddTransient(Type.GetType(t.FullName), Type.GetType(t.FullName));
            }
        }
    }

这然后从所谓startup.cs方法ConfigureServices：

This is then called from the startup.cs method ConfigureServices :

public void ConfigureServices(IServiceCollection services)
    {
        // Add framework services.
        services.AddEntityFramework()
            .AddSqlServer()
            .AddDbContext<TestContext>(options =>
                options.UseSqlServer(@"Server=LOCALHOST\SQLEXPRESS;Database=Test;Trusted_Connection=True;"));

        services.AddMvc();

        RegisterModels(services, new string[] { "UI" }, "UI.Models");

        services.AddTransient(typeof(IRepository<>), typeof(Repository<>));
    }

有可能是一个更好的方式来做到这一点，肯定是使用不同的DI容器，如果任何人有改进，以提供请让我知道。

There may be a better way to do this, there definitely is using different DI containers, if anyone has improvements to offer please let me know.

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