SQLite.Constraint exception Xamarin Mono Android

When using SQLite and your table contains an INTEGER PRIMARY KEY be sure to make the object that you store in the table with a NULLABLE integer for the ID.

CREATE TABLE Foo (
  fooID INTEGER PRIMARY KEY,
  fooData TEXT,
  barData REAL
)

class Foo
{
   public int? fooID {get; set;}
   public string fooData {get; set;}
   public float barData {get; set;}
}

When you add to the table be sure to set the index to null

Repository.AddFoo(new Foo{ fooID=null; fooData="foo", barData=3.14159});

It took me half a day to find because the damned stupid Android debugger is so SLOOOOWW!!