I'm working on my first WPF app, using VS 2008. I'm also using Matthew MacDonald's book Pro WPF in C# 2008: Windows Presentation Foundation with .NET 3.5, Second Edition. In it Matt has a class for implementing masked text boxes. I've used it in my WPF page, to handle things like social security numbers and phone numbers, and it works like a charm. However, it doesn't seem to be working at all for elements on the page which represent DateTime values, such as the date of birth. My SQL query is returning a date of birth value for the client I'm looking at, but nothing gets rendered on the WPF page.
Why is that? What can I do to fix this?