Our last step – regardless of whether we use a POCO or tool-generated Person class – will be to save our valid friends into the database. 

Doing that simply requires us to replace the “Todo” placeholder statement within our FriendsController class with 3 lines of code that saves the new friend to a database.  Below is the complete code for the entire FriendsController class - when using ADO.NET EF to do the database persistence for us:

And now when we visit the /Friends/Create URL we can easily add new People to our friends database:

Validation for all the data is enforced on both the client and server.  We can easily add/modify/delete validation rules in one place, and have those rules be enforced by all controllers and views across our application.