Creating a Data layer - 1a.) Data Model Classes - Starting at the top level of our 'Note'

Topic.cs

/*
Let's start by creating the top level model. 

1. Every Note has a Topic and a body. 
2. Every Topic can have a Reply. 

This class will represent one instance of that topic. The next class will model the Reply.
*/

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace Note.Data
{
  public class Topic
  {
    public int Id { get; set; } //Entity is smart enough to know what to do with the property of type int with the name Id, 
                                //and will follow our configuration (Guid, auto-increment)
    public string Title { get; set; }
    public string Body { get; set; }
    public DateTime Created { get; set; }

    public ICollection<Reply> Replies { get; set; } // ICollection will carry Replies, the type Reply will be the next class we make. The interface knows how to enumerate, remove, add items to itself. 
                                                    // The dB will handle storing this as a correct collection 
  }
}