Mask Syntax for the Masked Text Box
The MaskedTextBox uses the standard .NET MaskedTextProvider mask syntax. For full information see the .NET Framework SDK; a summary is provided below.
| Mask Character | Accepts | Required? |
|---|---|---|
| 0 | Digit (0-9) | Required |
| 9 | Digit (0-9) or space | Optional |
| # | Digit (0-9) or space | Required |
| L | Letter (a-z, A-Z) | Required |
| ? | Letter (a-z, A-Z) | Optional |
| & | Any character | Required |
| C | Any character | Optional |
| A | Alphanumeric (0-9, a-z, A-Z) | Required |
| a | Alphanumeric (0-9, a-z, A-Z) | Optional |
| . | Decimal separator | Required |
| , | Group (thousands) separator | Required |
| : | Time separator | Required |
| / | Date separator | Required |
| $ | Currency symbol | Required |
In addition, the following characters have special meaning:
| Mask Character | Meaning |
|---|---|
| < | All subsequent characters are converted to lower case |
| > | All subsequent characters are converted to upper case |
| | | Terminates a previous < or > |
| \ | Escape: treat the next character in the mask as literal text rather than a mask symbol |
All other characters are treated as literals.
XAML Considerations
XML reserves the &, < and > are special characters. To use these in a mask string in XAML, encode them as &, < and > respectively.
