Microsoft® Visual Basic® Scripting Edition IsNumeric Function |
Language Reference Version 1 |
Returns a Boolean value indicating whether an expression can be evaluated as a number.
IsNumeric(expression)The expression argument can be any expression.
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 whehter 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.