N - tier project with WCF OData service, Entity Framework, MVC3.0, Ninject DI, jSOn.net and Automapper

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using eShopping.Business.IRepository;
using eShopping.ViewModels;
using Newtonsoft.Json;
using eShopping.ActionProvider;
using eShopping.Entities.Entities;
using AutoMapper;
using System.Web.UI.WebControls;
using eShopping.Common;

namespace eShopping.Controllers
{
    public class CustomerController : Controller
    {

        ICustomersRepository customerRepository;
        public int PageSize;
        public CustomerController(ICustomersRepository customerRepository)
        {
            this.customerRepository = customerRepository;
            PageSize = 20;
        }

        public ActionResult List(int page)
        {
            try
            {

                var customersViewModel = new CustomersViewModel
                {
                    Customers = customerRepository.Customers.OrderBy(x => x.CustomerID).Skip((page - 1) * PageSize).Take(PageSize),
                    PagingInfo = new PagingInfo
                    {
                        CurrentPage = page,
                        ItemsPerPage = PageSize,
                        TotalItems = customerRepository.Customers.Count()
                    }

                };
                return View(customersViewModel);
            }
            catch (Exception ex)
            {
                if (ex.InnerException.Message == "Unauthorized")
                {
                    return RedirectToAction("login", "authentication");
                }
                else
                {
                    return View();
                }
            }
        }
        public ActionResult Orders(string customerId)
        {
            var orders = customerRepository.GetOrders(customerId);
            return new JResult
            {
                Data = orders.ToList()
            };
        }

        [HttpGet]
        public ActionResult Add()
        {
            var cityList = (from customer in customerRepository.Customers
                            select (new { customer.City })).ToMyList<string>("City");

            var CountriesList = (from customer in customerRepository.Customers
                                 select (new { customer.Country })).ToMyList<string>("Country");

            cityList.Insert(0, "--Select--");
            CountriesList.Insert(0, "--Select--");
            CustomerView custView = new CustomerView
            {
                Cities = new SelectList(cityList, cityList.FirstOrDefault()),
                Countries = new SelectList(CountriesList, CountriesList.FirstOrDefault())
            };
            return View(custView);
        }

        [HttpPost]
        public ActionResult Add(CustomerView customerView)
        {
            if (ModelState.IsValid)
            {
                Customer newCustomer = new Customer();

                AutoMapper.Mapper.Map(customerView, newCustomer);

                customerRepository.AddObject(newCustomer);
                customerRepository.SaveChanges();
            }
            return RedirectToAction("list");
        }

        [HttpGet]
        public ActionResult Delete(string customerId)
        {
            return View(customerRepository.Customers.Where(x => x.CustomerID == customerId).SingleOrDefault());
        }

        [HttpPost]
        public ActionResult Delete(Customer customer)
        {
            customerRepository.DeleteObject(customerRepository.Customers.Where(x => x.CustomerID == customer.CustomerID).SingleOrDefault());
            customerRepository.SaveChanges();
            return RedirectToAction("list");
        }
    }
}