IsNumeric Function

From Visual Basic Scripting

Microsoft® Visual Basic® Scripting Edition IsNumeric Function  Language Reference 
Version 1 


Description

Returns a Boolean value indicating whether an expression can be evaluated as a number.

Syntax

IsNumeric(expression)

The expression argument can be any expression.

Remarks

IsNumeric returns True if the entire expression is recognized as a number; otherwise, it returns False. IsNumeric returns False if expression is a date expression.

The following example uses the IsNumeric function to determine whether a variable can be evaluated as a number:

Dim MyVar, MyCheck
MyVar = 53                    ' Assign a value.
MyCheck = IsNumeric(MyVar)    ' Returns True.
MyVar = "459.95"              ' Assign a value.
MyCheck = IsNumeric(MyVar)    ' Returns True.
MyVar = "45 Help"             ' Assign a value.
MyCheck = IsNumeric(MyVar)    ' Returns False.