Question

Simply put, how can I bring up the dial pad?

Edit

In addition to the accepted answer the InputScope attribute on a TextBox can be set to TelephoneNumber.

Source: Blankenblog

Answer 1

Actually, it seems that the PhoneCallTask probably doesn’t do what you want.

I’m not sure that this is actually possible without making a call as per my original answer revision. What you could do however is emulate the screen within your own application (You can bring up a TextBox with InputScope="TelephoneNumber" which will show only the numbers somewhat like the built-in dialpad), then use PhoneCallTask to actually place the call.

You would use a PhoneCallTask to show the telephone dialer interface.

var phoneCallTask = new PhoneCallTask();
phoneCallTask.PhoneNumber = "";
phoneCallTask.Show();

PhoneCallTask on MSDN.