ISBLANK()

Purpose

Function to check for empty value

Syntax

ISBLANK(<expC> | <expD> | <expT> | <expL> | <memofield> | <expN>)

See Also

CTOD(), CTOT(), IIF(), IS_ARRAY(), IS_FLOAT(), IS_INT(), IS_OBJECT(), IS_STRING(), ISALPHA(), ISDIGIT(), ISLOWER(), ISUPPER(), SET CENTURY, SET DATE, SET MARK, SET SECONDS, SPACE(), TYPE()

Description

The ISBLANK() function returns .T. if the specified expression is 'empty'.

Data Type	Empty
Character	Space(0), "", [], ‘’, no text entered
Date	CTOD(""),{}, {00/00/0000}, { / / } and other SET CENTURY, SET MARK and SET DATE variations
Datetime	CTOT("") , { / /  :  : AM} and other SET CENTURY, SET MARK, SET SECONDS and SET DATE variations
Logical	.F.
Memo	No data entered
Numeric	0

Example

if isblank(name + address)
    dialog box "Name and address not specified."
endif

Products

Lianja, Lianja Server