| Masking element |
Description |
| 0 |
Digit, required. This element will accept any single digit between 0 and 9. |
| 9 |
Digit or space, optional. |
| # |
Digit or space, optional. If this position is blank in the mask, it will be rendered as a space in the Text property. Plus (+) and minus (-) signs are allowed. |
| L |
Letter, required. Restricts input to the ASCII letters a-z and A-Z. This mask element is equivalent to [a-zA-Z] in regular expressions. |
| ? |
Letter, optional. Restricts input to the ASCII letters a-z and A-Z. This mask element is equivalent to [a-zA-Z]? in regular expressions. |
| & |
Character, required. If the AsciiOnly property is set to true, this element behaves like the "L" element. |
| C |
Character, optional. Any non-control character. If the AsciiOnly property is set to true, this element behaves like the "?" element. |
| A |
Alphanumeric, optional. If the AsciiOnly property is set to true, the only characters it will accept are the ASCII letters a-z and A-Z. |
| a |
Alphanumeric, optional. If the AsciiOnly property is set to true, the only characters it will accept are the ASCII letters a-z and A-Z. |
| . |
Decimal placeholder. The actual display character used will be the decimal placeholder appropriate to the format provider, as determined by the control's FormatProvider property. |
| , |
Thousands placeholder. The actual display character used will be the thousands placeholder appropriate to the format provider, as determined by the control's FormatProvider property. |
| : |
Time separator. The actual display character used will be the time placeholder appropriate to the format provider, as determined by the control's FormatProvider property. |
| / |
Date separator. The actual display character used will be the date placeholder appropriate to the format provider, as determined by the control's FormatProvider property. |
| $ |
Currency symbol. The actual character displayed will be the currency symbol appropriate to the format provider, as determined by the control's FormatProvider property. |
| < |
Shift down. Converts all characters that follow to lowercase. |
| > |
Shift up. Converts all characters that follow to uppercase. |
| | |
Disable a previous shift up or shift down. |
| \ |
Escape. Escapes a mask character, turning it into a literal. "\\" is the escape sequence for a backslash. |
| All other characters |
Literals. All non-mask elements will appear as themselves within MaskedTextBox. Literals always occupy a static position in the mask at run time, and cannot be moved or deleted by the user. |
