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Is Number Function
Comparisons Class

Public Function IsNumber( _
    ByVal vValue As Variant _
    ) As Boolean

Return True if the data type of the argument is numeric.
Function returns False otherwise.
More specifically, it considers the following data types numeric: Boolean, Byte, Currency, Date, Double, Integer, Long, and Single.

Examples: 
    IsNumber(34) = True
    IsNumber(1234.56) = True
    IsNumber(#12/31/95#) = True
    IsNumber("34") = False
    IsNumber("A word.") = False
See also: 
    IsFloatingPointDataType Function
    IsWholeDataType Function
vValue: Value whose data type is examined to see if it is numeric.
v1.5 Change: This function has been extended to support the new Decimal data type in VB 6.0.

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