Strings: Extract characters from a string containing both numbers and characters

(Q) How do I extract only characters from a string which has both numeric and alphanumeric characters?

(A) Use the following function. Note that the If loop can be modified to extract either both Lower and Upper case character or either Lower or Upper case characters.

'************ Code Start **********
Function fExtractStr(ByVal strInString As String) As String
Dim lngLen As Long, strOut As String
Dim i As Long, strTmp As String

    lngLen = Len(strInString)
    strOut = ""
    For i = 1 To lngLen
        strTmp = Left$(strInString, 1)
        strInString = right$(strInString, lngLen - i)
        'The next statement will extract BOTH Lower and Upper case chars
        If (Asc(strTmp) >= 65 And Asc(strTmp) <= 90) Or _
            (Asc(strTmp) >= 97 And Asc(strTmp) <= 122) Then
            'to extract just lower case, use the limit 97 - 122
            'to extract just upper case, use the limit 65 - 90
            strOut = strOut & strTmp
        End If
    Next i
    fExtractStr = strOut
End Function
'************ Code End **********