March 2003
Intermediate to advanced
512 pages
14h 30m
English
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Name
IsDate Function
Syntax
IsDate(expression)expressionUse: Required
Data Type: Any.
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 and Gotchas
IsDate uses 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.
IsDate is particularly useful for validating data input.
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