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


Return value

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

This statement returns true:

IsNumber("32.65")

This statement returns false:

IsNumber("A16")

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

See also

Double

Dec

Integer

Long

Real

IsNumber method for DataWindows in the section called “IsNumber” in DataWindow Reference.