how can I get a date from the user in Windows Phone?

I should get a date from the user inside a WP 8.1 app, I need something like the DateTimePicker which I use in Windows Forms or the DatePicker of WPF environment, do you know ho to do this?

I tried to search something similar to DatePicker in windows phone but I can't find anything!

My app should get this date to generate a fiscal code, so I need to get the user's birthday. Is there any tag to add to my xaml file?

Thanks a lot guys!