ASP.NET MVC - Dependency Injection - asp.net

Question

I am going over dependency injection. I have an ASP.NET MVC project where the model is named Customers:
public class Customers
{
public ID get; set;
private Customer customer
public Customers()
{
customer = new Customer();
}
}
Now I am suppose to add classes in order to eliminate the dependency in the above class. For example, Customer is a dependency of the Customers class.
Customers should depend on an abstraction. I created an interface (or abstract class) named IStorageCustomer
public interface IStorageCustomer
{
}
Now I changed the Customers class to the following below:
public class Customers
{
public ID get; set;
private IStorageCustomer customer;
public Customers(IStorageCustomer customer)
{
this.customer = customer;
}
}
I need to know if the dependency has been eliminated in the above class. What else do I need to do? Please help. Any help will be greatly appreciated. Thank you.

Answer 1

You can install Ninject MVC. (be aware there are different version for each version of MVC)
This is a Nuget which manages the dependency Injection for you.
To make Ninject inject the right class, you should set it up in the NinjectWebCommon file.
private static void RegisterServices(IKernel kernel)
{
//all your bindings will be configured here
kerenl.Bind<IStorageCustomer>().To<Costumer>(); //if you want Customer instances to be injected everywhere you expect an IStorageCustomer
}
Also leave a default constructor for the class you want to inject instances into.

Answer 2

Instead of Customer, I will rename it to Person. Now here are the changes that I have so far. This is also including classes that I have just added. The only problem is that person in the Customers model class is inaccessible because it is private and also its type.
public class Customers
{
public int ID { get; set; }
private IStoragePerson person;
public Customers()
{
this.person = LocateCustomer.GetCustomer();
}
}
public class Person : IStoragePerson
{
public string person{ get; set; }
}
Don't know what to add for IStoragePerson
public interface IStoragePerson
{
}
public class LocateCustomer
{
public static IStoragePerson person{ get; set; }
public static IStoragePerson GetCustomer()
{
if(person == null)
{
person = new Person();
}
return person;
}
}