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ngonzalezromero opened this issue Aug 18, 2015 · 5 comments
Closed

Console Application example with DI #849

ngonzalezromero opened this issue Aug 18, 2015 · 5 comments

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@ngonzalezromero
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Hi
I have this code

 public class Program    {
    public IConfiguration Configuration { get; set; }
    public IServiceCollection Collection { get; set; }

    public Program(IApplicationEnvironment app)
    {
        Configuration = new ConfigurationBuilder()
        .AddJsonFile($"{app.ApplicationBasePath}/config.json")
        .AddEnvironmentVariables()
        .Build();

    }

    public void Main(string[] args)
    {

        var service = new ServiceCollection();
        service.AddTransient<IVirtualScreen, VirtualScreen>();
        Console.WriteLine("Test");

        Console.ReadKey();
    }
      }

}

But, i don't how i should implement DI in another class

Regards
@davidfowl
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Member

But, i don't how i should implement DI in another class?

What does that mean.

@ghost
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ghost commented Aug 23, 2015

Perhaps the following is what you are looking for? It displays "Hello World" to console, it uses constructor injection in the NoFooHere class.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.Framework.DependencyInjection;

namespace ConsolePrototype
{
    public class Program
    {
        public void Main(string[] args)
        {
            var services = new ServiceCollection();

            // Add our interfaces/implementation to collection
            services
                .AddTransient<IFoo, Foo>()
                .AddSingleton<INoFoo, NoFooHere>();

            // Build our service provider from collection
            var serviceProvider = services.BuildServiceProvider();

            // Resolve our interface - uses constructor injection
            var foo = serviceProvider.GetService<INoFoo>();

            Console.WriteLine(foo.Content);
        }

        public interface INoFoo {  string Content { get; set; } }
        public class NoFooHere : INoFoo
        {
            public string Content { get; set; }
            public NoFooHere(IFoo foo)
            {
                Content = foo.GetFoo();
            }
        }

        public interface IFoo  {  string GetFoo(); }
        public class Foo : IFoo
        {
            public string GetFoo()
            {
                return "Hello World";
            }                
        }
    }
}

@aspnet-hello
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This issue is being closed because it has not been updated in 3 months.

We apologize if this causes any inconvenience. We ask that if you are still encountering this issue, please log a new issue with updated information and we will investigate.

@davidalpert
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davidalpert commented Dec 31, 2017 via email

@davidalpert
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davidalpert commented Dec 31, 2017 via email

ryanbrandenburg pushed a commit that referenced this issue Nov 22, 2018
@JamesNK
Merge pull request #849 from dotnet-maestro-bot/merge/maestro/release…
016fec7 
…/2.2-to-release/2.2

[automated] Merge branch 'maestro/release/2.2' => 'release/2.2'
@ghost ghost locked as resolved and limited conversation to collaborators Dec 4, 2019
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4 participants
@davidalpert @davidfowl @ngonzalezromero @aspnet-hello