Mask Tokens

When the MaskType of the RadMaskedInput control is set to Text, you can utilize the available Mask Tokens to restrict the user input. Below you can find a list of the available tokens and their purpose:

Token Corresponding Regex Usage
0 "[0-9]" a single digit
9 "[0-9]{1}" a single digit(required)
L "[a-zA-Z]" a single letter
? "[a-zA-Z]{1}" a single letter(required)
& "\S" all symbols without space
C "." all symbols
A "[0-9a-zA-Z]" all without special symbols and space
a "[0-9a-zA-Z ]" all without special symbols

Mask Extensions

The static class Telerik.XamarinForms.Input.MaskedInput.MaskExtensions contains two static regular expressions which you can directly use for validation when the MaskType is Regex:

  • IP: "^(([1-9]?\d|1\d\d|2[0-5][0-5]|2[0-4]\d)\.){3}([1-9]?\d|1\d\d|2[0-5][0-5]|2[0-4]\d)$"
  • Email: "(([^<>()\[\]\.,;:\s@\"]+(\.[^<>()\[\]\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))"

Mask Tokens Example

<telerikInput:RadMaskedInput x:Name="maskedInput"
                             Mask="(CC) 00"

See Also