gistfile1.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
	class Person
	{
		public int Id { get; private set; }
		public string Name { get; private set; }

		public Person(int id, string name)
		{
			Id = id;
			Name = name;
		}
	}

	class People
	{
		public Dictionary<int, Person> People { get; private set; }

		public People()
		{
			People = new Dictionary<int, Person>();
		}

		public void AddPerson(Person person)
		{
			People.Add(person.Id, person);
		}

		public Person GetPersonById(int id)
		{
			return People[id];
		}
	}

	interface IPeopleView
	{
		void DisplayPeople();
		Person SelectPerson();
		void DisplayPerson(Person person);
	}

	class ConsolePeopleView : IPeopleView
	{
		private People _people;

		public ConsolePeopleView(People people)
		{
			_people = people;
		}

		public void DisplayPeople()
		{
			foreach (var person in _people.People)
			{
				Console.WriteLine("{0} - {1}", person.Key, person.Value.Name);
			}
		}

		public Person SelectPerson()
		{
			DisplayPeople();

			Console.Write("Select person: ");
			var selectedId = int.Parse(Console.ReadLine());
			return _people.GetPersonById(selectedId);
		}

		public void DisplayPerson(Person person)
		{
			Console.WriteLine("Person: {0} is named {1}", person.Id, person.Name);
		}
	}

	class Database
	{
		public void Save(object obj)
		{
		}
	}

	class ThinggyRepository
	{
		private Database _database;

		public ThinggyRepository(Database database)
		{
			_database = database;
		}

		public void Add(object thinggy)
		{
			// validate thinggy
			_database.Save(thinggy);
			// perhaps perform more logic here
		}
	}

	class Program
	{
		static void RunProgram(People model, IPeopleView view)
		{
			model.AddPerson(new Person(423, "Nelson"));
			model.AddPerson(new Person(41, "Whoa"));
			model.AddPerson(new Person(312, "Blegh"));
			model.AddPerson(new Person(4214, "Hey"));
			model.AddPerson(new Person(566, "There"));

			var selectedPerson = view.SelectPerson();
			view.DisplayPerson(selectedPerson);
		}

		static void Main(string[] args)
		{
			var people = new People();
			var view = new ConsolePeopleView(people);

			RunProgram(people, view);

			Console.ReadKey();
		}
	}
}