IsNumber

Description

Reports whether the value of a string is a number.

Syntax

IsNumber ( string )

Argument	Description
string	A string whose value you want to test to determine whether it is a valid PowerScript number

Returns

Boolean. Returns true if string is a valid PowerScript number and false if it is not. If string is null, IsNumber returns null.

Usage

Use IsNumber to check that text in an edit control can be converted to a number.

To convert a string to a specific numeric datatype, use the Double, Dec, Integer, Long, or Real function.

Examples

Example 1

This statement returns true:

IsNumber("32.65")

Example 2

This statement returns false:

IsNumber("A16")

Example 3

If the SingleLineEdit sle_Age contains 32, these statements store 32 in li_YearsOld:

integer li_YearsOld

IF IsNumber(sle_Age.Text) THEN

    li_YearsOld = Integer(sle_Age.Text)

END IF