Asp.net Core Get Methods Under One Interface

Question

How can I get Method Under One interface like this:

My service classes:

Module A

public class CollectorA : ICollector
{
    public string CollectSomething()
    {
        //Do something
    }
}

Module B

public class CollectorB : ICollector
{
    public string CollectSomething()
    {
        //Do something
    }
}

Module C

public class CollectorC : ICollector
{
    public string CollectSomething()
    {
        //Do something
    }
}

My ICollector interface:

public interface ICollector
{
    string CollectSomething();
}

My IModuleInitializer:

public interface IModuleInitializer
{
    void Init(IServiceCollection serviceCollection);
}

Under Every Service I have ModuleInitializer like this

public void Init(IServiceCollection serviceCollection)
{
    serviceCollection.AddTransient<ICollector, CollectorA>();
    serviceCollection.AddTransient<ICollector, CollectorB>();
    serviceCollection.AddTransient<ICollector, CollectorC>();
}

How can I access for example in win console application this methods over this interface ?

My main class :

static void Main(string[] args)
{
    //Get String Values each module and show on console ..
}

After the service provider has been built you can use serviceProvider.GetServices<ICollector>() extension method. Note it is GetServices (plural). It would return IEnumerable<ICollector> containing all the registered implementations. — Nkosi
– Nkosi, Commented Jul 4, 2017 at 11:22
I made an assumption about what you wanted but your question is still a bit unclear. What are you trying to do exactly? — Nkosi
– Nkosi, Commented Jul 4, 2017 at 12:09
For example my methodA doing sum of two number (2+4),methodB doing (3+5) ... I want call all of them in main application — Batuhan
– Batuhan, Commented Jul 4, 2017 at 12:15
I think the better implementation is to use the Factory Pattern or Strategy pattern no ? — OrcusZ
– OrcusZ, Commented Jul 4, 2017 at 13:09

Nkosi · Accepted Answer · 2017-07-04 12:22:27Z

1

Assuming the following implementation

pubic class ModuleInitializer : IModuleInitializer{
    public void Init(IServiceCollection serviceCollection) {
        serviceCollection.AddTransient<ICollector, CollectorA>();
        serviceCollection.AddTransient<ICollector, CollectorB>();
        serviceCollection.AddTransient<ICollector, CollectorC>();
    }
}

and the other classes in the original question.

After the service provider has been built you can use serviceProvider.GetServices<ICollector>() extension method. Note it is GetServices (plural). It would return IEnumerable<ICollector> containing all the registered implementations.

The following example shows how to use the DI framework

static void Main(string[] args) {
    var services = new ServiceCollection();
    var moduleInitializer = new ModuleInitializer();
    moduleInitializer.Init(services);
    IServiceProvider serviceProvider = services.BuildServiceProvider();

    //Get String Values each module and show on console ..
    var collectors = serviceProvider.GetServices<ICollector>();
    foreach(ICollector collector in collectors) {
        Console.WriteLine(collector.CollectSomething());
    }
}

answered Jul 4, 2017 at 12:22

Nkosi

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1 Comment

Batuhan Over a year ago

One question more :) All working but i m trying Add.Transient<...,...>(); automatically . In short i dont want use addTransient every module implementation. Any help thanks

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