May 1995
Beginner
508 pages
16h 14m
English
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Name
IsDate Function
Syntax
IsDate(expression)-
expression Use: Required
Data Subtype: Any expression capable of conversion to a date or time.
Variable or expression containing a date or time.
Return Value
Boolean (True or False).
Description
Determines whether a variable’s value can be converted to a date.
Rules at a Glance
If the expression passed to IsDate is a valid
date, True is returned; otherwise,
IsDate returns False.
Programming Tips & Gotchas
IsDateuses the locale settings of the current Windows system to determine whether the value held within the variable is recognizable as a date. Therefore, what is a legal date format on one machine may fail on another.IsDateis particularly useful for validating data input.
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