Save entities to the database

Clearly we have saved entities to the database in many of the previous recipes, but it's time to dig a bit deeper into how that actually works. This recipe will explore different ways of saving and what happens behind the scenes.

Getting ready

1. Create a new Windows forms project named SessionRecipes, in Visual Studio.

2. Add a reference to NHibernate using NuGet Packet Manager Console:

   Install-Package NHibernate -project SessionRecipes
   

3. Also add a reference to NH4CookbookHelpers:

   Install-Package NH4CookbookHelpers -project SessionRecipes
   

4. Remove the class Form1.cs from the project.

5. Add using NH4CookbookHelpers; to the top of Program.cs.

6. Edit Program.cs so that the last line in Main reads:

   Application.Run(new WindowsFormsRunner());

Using NHCookbookHelpers you don't even have to have a database server available, since it uses an in-memory SQLite database by default. If you want to use something else, like a local SQL server, you can specify a configuration instance to be used...