World’s simplest OData service

using System;
using System.Collections.Generic;
using System.Data.Services;
using System.Linq;


namespace ODataConsoleService {
    class Program {
        static void Main(string[] args) {

            string serviceAddress = "http://localhost:998";
            Uri[] uriArray = { new Uri(serviceAddress) };
            Type serviceType = typeof(CustomerDataService);

            using (var host = new DataServiceHost(serviceType, uriArray)) {
                host.Open(); 
                Console.WriteLine("Press any key to stop service");
                Console.ReadKey();
            }

        }

    }

    // Expose IQueryable properties as read-only Atom collections
    public class CustomerDataService : DataService<CustomerService> {
        public static void InitializeService(IDataServiceConfiguration config) {
            config.SetEntitySetAccessRule("*", EntitySetRights.AllRead);
        }
    }


    // Expose list of customers Customer as IQueryable
    public class CustomerService {
        private List<Customer> _List = new List<Customer>();

        public CustomerService() {

            _List.Add(new Customer() { ID = 1, Code = "BLAH", Name = "Blah" });
            _List.Add(new Customer() { ID = 2, Code = "Bob", Name = "Bob's Hardware" });
            _List.Add(new Customer() { ID = 3, Code = "Bill", Name = "Bills Fishmongers" });
        }

        public IQueryable<Customer> Customers {
            get {
                return _List.AsQueryable<Customer>();
            }
        }

    }

    // Entity to expose in atom:Entry
    public class Customer {
        public int ID { get; set; }  // ID is required to be a viable OData entity
        public string Code { get; set; }
        public string Name { get; set; }
    }

}