Get current IServiceScope in controller

get an instance ... in a controller:

1. There're no need to use IHttpContextAccessor within a Controller. There's already a HttpContext property for you. If you want to access HttpContext, just

   // no need to use IHttpContextAccessor.HttpContext
   var svc = HttpContext.RequestServices.GetService<MyService>();
   

2. Or as an alternative, inject the IServiceProvider directly:

   public class MyController : Controller
   {
       private IServiceProvider _sp;
       public MyController(IServiceProvider sp)
       {
           this._sp = sp;
       }
   }
   

   and when you want a small scope, you can create it as below:

   public IActionResult MyActoin()
   {
       // create a more small scope
       using (var scope = this._sp.CreateScope())
       {
           var sp = scope.ServiceProvider;
           // now you get the services from this small scope
           var svc1 = sp.GetRequiredService<MyService1>();
           var svc2 = sp.GetRequiredService<MyService2>();
           //...
       }
       return new JsonResult("it works");
   }
   

3. In particular, if the required service's scope is exactly the Request Scope, just inject them all:

   public class MyController : Controller
   {
       private IServiceProvider _sp;
       private readonly MyService1 _service1;
       private readonly MyService2 _service2;
   
       public MyController(IServiceProvider sp, MyService1 service1, MyService2 service2,...)
       {
           this._sp = sp;
           this._service1 = service1;
           this._service2 = service2;
       }
   

One solution is to ask for IHttpContextAccessor contextAccessor in controller's constructor and then resolve the desired services from it:

var svc = contextAccessor.HttpContext.RequestServices.GetService<MyService>();