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Guiding Input with a Masked Text Box
MaskedEdit is an ASP.NET AJAX extender that attaches to a TextBox control to restrict the kind of text that can be entered. MaskedEdit applies a “mask” to the input that permits only certain types of characters/text to be entered. The supported data formats are: Number, Date, Time, and DateTime. MaskedEdit uses the culture settings specified in the CultureName property. If none is specified the culture setting will be the same as the page: English (United States).
The number control above is initialized with this code. The italic properties are optional.
<ajaxToolkit:MaskedEditExtender TargetControlID="TextBox2" Mask="9,999,999.99" MessageValidatorTip="true" OnFocusCssClass="MaskedEditFocus" OnInvalidCssClass="MaskedEditError" MaskType="Number" InputDirection="RightToLeft" AcceptNegative="Left" DisplayMoney="Left" ErrorTooltipEnabled="True"/>
- MaskType – Type of validation to perform:
None – No validation
Number – Number validation
Date – Date validation
Time – Time validation
DateTime – Date and time validation - Mask Characters and Delimiters
9 – Only a numeric character
L – Only a letter
$ – Only a letter or a space
C – Only a custom character (case sensitive)
A – Only a letter or a custom character
N – Only a numeric or custom character
? – Any character/ – Date separator
: – Time separator
. – Decimal separator
, – Thousand separator
\ – Escape character
{ – Initial delimiter for repetition of masks
} – Final delimiter for repetition of masksExamples:
9999999 – Seven numeric characters
99\/99 – Four numeric characters separated in the middle by a “/” - AcceptAMPM – True to display an AM/PM symbol
- AcceptNegative – True if the negative sign (-) is allowed
None – Do not show the negative sign
Left – Show the negative sign on the left of the mask
Right – Show the negative sign on the right of the mask - AutoComplete – True to automatically fill in empty mask characters not specified by the user
MaskType=Number – Empty mask characters will be filled with zeros
MaskType=Time – Empty mask characters will be filled with the current time
MaskType=Date – Empty mask characters will be filled with the current date
MaskType=DateTime – Empty mask characters will be filled with the current date/time - AutoCompleteValue – Default character to use when AutoComplete is enabled
- Century – Default century used when a date mask only has two digits for the year
- ClearMaskOnLostFocus – True to remove the mask when the TextBox loses focus
- ClearTextOnInvalid – True to clear the TextBox when invalid text is entered
- ClipboardEnabled– True to allow copy/paste with the clipboard
- ClipboardText – Prompt text to use when a clipboard paste is performed
- DisplayMoney – Specifies how the currency symbol is displayed
None – Do not show the currency symbol
Left – Show the currency symbol on the left of the mask
Right – Show the currency symbol on the right of the mask - ErrorTooltipCssClass – CSS class for the tooltip message
- ErrorTooltipEnabled – True to show a tooltip message when the mouse hovers over an invalid TextBox
- Filtered – Valid characters for mask type “C” (case-sensitive)
- InputDirection – Text input direction
LeftToRight – Left to Right
RightToLeft – Right to left - MessageValidatorTip – Message displayed when editing in TextBox
- PromptChararacter – Prompt character for unspecified mask characters
- UserDateFormat – Custom date format
- UserTimeFormat – Custom time format
- OnFocusCssClass – CSS class used when the TextBox receives focus
- OnFocusCssNegative – CSS class used when the TextBox gets focus with a negative value
- OnBlurCssNegative – CSS class used when the TextBox loses focus with a negative value
- OnInvalidCssClass – CSS class used when the text is not valid.
- CultureName – Name of culture to use (overrides the default page culture)
- CultureAMPMPlaceholder – Culture override
- CultureCurrencySymbolPlaceholder – Culture override
- CultureDateFormat – Culture override
- CultureDatePlaceholder – Culture override
- CultureDecimalPlaceholder – Culture override
- CultureThousandsPlaceholder – Culture override
- CultureTimePlaceholder – Culture override
The control above is initialized with this code. The italic properties are optional.
<ajaxToolkit:MaskedEditValidator ControlExtender="MaskedEditExtender2" ControlToValidate="TextBox2" IsValidEmpty="False" MaximumValue="12000" EmptyValueMessage="Number is required" InvalidValueMessage="Number is invalid" MaximumValueMessage="Number > 12000" MinimumValueMessage="Number < -100" MinimumValue="-100" EmptyValueBlurredText="*" InvalidValueBlurredMessage="*" MaximumValueBlurredMessage="*" MinimumValueBlurredText="*" Display="Dynamic" TooltipMessage="Input a number: -100 up to 12.000"/>
- ControlToValidate – ID of the TextBox to validate
- ControlExtender – ID of the MaskedEditExtender attached to the TextBox
- AcceptAMPM – Whether or not AM/PM is accepted on times.
The default value is false. - ClientValidationFunction – Client script used for custom validation
- InitialValue – Initial value of the TextBox
- IsValidEmpty – True if the TextBox can be empty
- MaximumValue – Maximum value of the input
- MinimumValue – Minimum value of the input
- ValidationExpression – Regular expression used to validate the input
- TooltipMessage – Message displayed when the TextBox has focus with an empty value
- EmptyValueMessage – Message displayed when empty and TextBox has focus
- EmptyValueBlurredText – Message displayed when empty and TextBox does not have focus
- InvalidValueMessage – Message displayed when invalid and TextBox has focus
- InvalidValueBlurredMessage – Message displayed when invalid and TextBox does not have focus
- MaximumValueMessage – Message displayed when maximum value exceeded and TextBox has focus
- MaximumValueBlurredMessage – Message displayed when maximum value exceeded and TextBox does not have focus
- MinimumValueMessage – Message displayed when minimum value exceeded and TextBox has focus
- MinimumValueBlurredText – Message displayed when minimum value exceeded and TextBox does not have focus
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