MaskedTextBox for UWP includes the C1MaskedTextBox control, a simple control which provides a text box with a mask that automatically validates entered input. When you add the C1MaskedTextBox control to a XAML window, it exists as a completely functional text box which you can further customize with a mask.

The C1MaskedTextBox control appears like a text box and includes a basic text input area which can be customized.