Input Masks for TextBox and TextLabel

It would be really nice to specify a format for a textbox or label control and have any input formatted accordingly. The biggest use I see is for currency formatting. I currently use global properties to store some integer values so that I can use them in multiple pages. When I store them, I want to store them as a number so I can do calculations on them. However, when I’m displaying them to the user, I’d like for them to be formatted as currency. Also, I may want the user to input a value and have it formatted to currency when focus is lost. Some other possible formats may be:

phone number

zip code

SSN

Maybe even allow us to make custom formats similarly to how Excel does? For example, I could specify:

## – ##### – ##