ASP.Net WebApi: How to inject repository by Unity DI
<p>please discuss with code sample that how to inject repository dynamically in controller by Unity DI</p>

<p>now I am doing things like this way without Unity DI.</p>

<pre><code>public class CustomerController : ApiController
{
    static readonly ICustomerRepository repository = new CustomerRepository();

    public IEnumerable&lt;Customer&gt; GetAllCustomers()
    {
        return repository.GetAll();
    }

    public Customer GetCustomer(string customerID)
    {
        Customer customer = repository.Get(customerID);
        if (customer == null)
        {
            throw new HttpResponseException(HttpStatusCode.NotFound);
        }
        return customer;
    }

    public IEnumerable&lt;Customer&gt; GetCustomersByCountry(string country)
    {
        return repository.GetAll().Where(
            c =&gt; string.Equals(c.Country, country, StringComparison.OrdinalIgnoreCase));
    }

    public HttpResponseMessage PostCustomer(Customer customer)
    {
        customer = repository.Add(customer);
        var response = Request.CreateResponse&lt;Customer&gt;(HttpStatusCode.Created, customer);

        string uri = Url.Link("DefaultApi", new { customerID = customer.CustomerID });
        response.Headers.Location = new Uri(uri);
        return response;
    }

    public void PutProduct(string customerID, Customer customer)
    {
        customer.CustomerID = customerID;
        if (!repository.Update(customer))
        {
            throw new HttpResponseException(HttpStatusCode.NotFound);
        }
    }

    public void DeleteProduct(string customerID)
    {
        Customer customer = repository.Get(customerID);
        if (customer == null)
        {
            throw new HttpResponseException(HttpStatusCode.NotFound);
        }
        repository.Remove(customerID);
    }
}
</code></pre>

<blockquote>
  <p>static readonly ICustomerRepository repository = new
  CustomerRepository();</p>
</blockquote>

<p>here my repository is hard code. how can i inject it by unity.</p>

<p>please show me the way. thanks</p>