windows phone toolkit time picker convert to military time

Im currently using the available toolkit for windows phone. By using the time picker, I want to change it to military time. But I dont know to customize it.

So I came up with creating my own time picker by using the LoopingSelector, but I dont know how will I implement it along with appbar, since this was only a popup.

What is the strategic way to recreate this timepicker along with a开发者_运维百科ppbar?

Given that the underlying type is still the same (DateTime), then I think that rather than creating a new TimePicker, you could just implement a custom picker page as described in WP7 DatePicker and TimePicker in depth | API and Customization on WindowsPhoneGeek.com. Richard Griffin also has a post that covers the same topic for DatePicker.