ASP.NET MVC
https://msdn.microsoft.com/en-us/library/dn178463(v=pandp.30).aspx
Good Article about DI
Dependency Injection in ASP.NET Core - a quick overview
http://asp.net-hacker.rocks/2016/02/17/dependency-injection-in-aspnetcore.html
+ Dependency Injection (DI)
+ How to register the services (4 ways)
- services.AddTransient
- services.AddSingleton
- services.AddScoped
- services.AddInstance
+ How to inject a service globally into all Views using ApplicationInsights.
+ DI is also working in MiddleWares, TagHelpers and ViewComponents.
Implement dependency injection outside of Startup.cs
https://stackoverflow.com/questions/40306928/implement-dependency-injection-outside-of-startup-cs
ASP.NET Core MVC
Dependency injection into controllers
https://docs.microsoft.com/en-us/aspnet/core/mvc/controllers/dependency-injection
Using dependency injection in a .Net Core console application
https://andrewlock.net/using-dependency-injection-in-a-net-core-console-application/
Essential .NET - Dependency Injection with .NET Core
https://msdn.microsoft.com/en-us/magazine/mt707534.aspx
NuGet: Install-Package Microsoft.Extensions.DependencyInjection -Version 1.1.1
Dependency Injection (DI) Lifetimes
https://www.hmtmcse.com/language/c/dotnet-core/dependency-injection
Code samples:
------------------------------
1) Interface
------------------------------
using System;
namespace ControllerDI.Interfaces
{
public interface IDateTime
{
DateTime Now { get; }
}
}
------------------------------
2) Services - Repository
------------------------------
using System;
using ControllerDI.Interfaces;
namespace ControllerDI.Services
{
public class SystemDateTime : IDateTime
{
public DateTime Now
{
get { return DateTime.Now; }
}
}
}
--------------------------------------------------
3) Controllers - Constructor Injection
--------------------------------------------------
using ControllerDI.Interfaces;
using Microsoft.AspNetCore.Mvc;
namespace ControllerDI.Controllers
{
public class HomeController : Controller
{
private readonly IDateTime _dateTime;
public HomeController(IDateTime dateTime)
{
_dateTime = dateTime;
}
public IActionResult Index()
{
var serverTime = _dateTime.Now;
if (serverTime.Hour < 12)
{
ViewData["Message"] = "It's morning here - Good Morning!";
}
else
{
ViewData["Message"] = "It's evening here - Good Evening!";
}
return View();
}
}
}
------------------------------
4) ConfigureServices
------------------------------
public void ConfigureServices(IServiceCollection services)
{
// Add application services.
services.AddTransient<IDateTime, SystemDateTime>();
}
