private void Form1_Load(object sender, EventArgs e)
        {
            Configuration cfg = new Configuration();
            cfg.AddAssembly("NHClass");
            ISessionFactory factory = cfg.BuildSessionFactory();

using System;
using System.Collections;

namespace NHClass

public class Post
    {...

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.0">
    <class name="NHClass.Post, NHClass" table="nh_posts">
      <id name="PostID" column="PostID" type="Guid">
        <generator class="assigned" />
      </id>
...