John-

>

>AnimalsVw.RowFilter = "Dob <= '" + DateTime.Today.AddMonths(-18).ToString("yyyy-MM-dd") + "'";
>

Glad it's working now, and I'm sorry for my earlier misdirection.

>I am using the compact framework. I don't think it supports the Console.WriteLine class which makes debugging a lot harder.

Well, you can use a test project. They're pretty easy to create.