Number to Words XML Web Service - Visual Basic , VB.NET

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Number to Words XML Web Service
Author: Ken Mercer
E-mail: Click to e-mail author
Submitted: 10/30/2003
Version: VB.NET
Compatibility: VB.NET
Category: Internet Programming
Views: 13369
This sample code describes a Web service through which a client can get the equivalent of a number in words. This can be used in many applications such as accounting packages and invoices.
Declarations:
'none
Code:
<%@ WebService Language="VB" Class="NumberToWords" %> Imports System Imports System.Collections Imports System.ComponentModel Imports System.Data Imports System.Diagnostics Imports System.Web Imports System.Web.Services Imports Microsoft.VisualBasic Public Class NumberToWords Inherits System.Web.Services.WebService <WebMethod(Description:="Gets the words for a Number", EnableSession:=False)> _ Public Function getWords(myNumber AS String) As String getWords = SpellNumber(myNumber) End Function 'Main Function Private Function SpellNumber(MyNumber As String) Dim Dollars, Cents, Temp Dim DecimalPlace, Count Dim Place(9) As String Place(2) = " Thousand " Place(3) = " Million " Place(4) = " Billion " Place(5) = " Trillion " ' String representation of amount MyNumber = Convert.ToString(MyNumber) ' Position of decimal place 0 if none DecimalPlace = InStr(MyNumber, ".") 'Convert cents and set MyNumber to dollar amount If DecimalPlace > 0 Then Cents = GetTens(Left(Mid(MyNumber, DecimalPlace + 1) & "00", 2)) MyNumber = Trim(Left(MyNumber, DecimalPlace - 1)) End If Count = 1 Do While MyNumber <> "" Temp = GetHundreds(Right(MyNumber, 3)) If Temp <> "" Then Dollars = Temp & Place(Count) & Dollars If Len(MyNumber) > 3 Then MyNumber = Left(MyNumber, Len(MyNumber) - 3) Else MyNumber = "" End If Count = Count + 1 Loop Select Case Dollars Case "" Dollars = "zero Dollars" Case "One" Dollars = "One Dollar" Case Else Dollars = Dollars & " Dollars" End Select Select Case Cents Case "" Cents = " and zero Cents" Case "One" Cents = " and One Cent" Case Else Cents = " and " & Cents & " Cents" End Select SpellNumber = Dollars & Cents End Function 'Converts a number from 100-999 into text Private Function GetHundreds(MyNumber As String) Dim Result As String If Val(MyNumber) = 0 Then Exit Function MyNumber = Right("000" & MyNumber, 3) 'Convert the hundreds place If Mid(MyNumber, 1, 1) <> "0" Then Result = GetDigit(Mid(MyNumber, 1, 1)) & " Hundred " End If 'Convert the tens and ones place If Mid(MyNumber, 2, 1) <> "0" Then Result = Result & GetTens(Mid(MyNumber, 2)) Else Result = Result & GetDigit(Mid(MyNumber, 3)) End If GetHundreds = Result End Function 'Converts a number from 10 to 99 into text Private Function GetTens(TensText As String) Dim Result As String Result = "" 'null out the temporary function value If Val(Left(TensText, 1)) = 1 Then ' If value between 10-19 Select Case Val(TensText) Case 10: Result = "Ten" Case 11: Result = "Eleven" Case 12: Result = "Twelve" Case 13: Result = "Thirteen" Case 14: Result = "Fourteen" Case 15: Result = "Fifteen" Case 16: Result = "Sixteen" Case 17: Result = "Seventeen" Case 18: Result = "Eighteen" Case 19: Result = "Nineteen" Case Else End Select Else ' If value between 20-99 Select Case Val(Left(TensText, 1)) Case 2: Result = "Twenty " Case 3: Result = "Thirty " Case 4: Result = "Forty " Case 5: Result = "Fifty " Case 6: Result = "Sixty " Case 7: Result = "Seventy " Case 8: Result = "Eighty " Case 9: Result = "Ninety " Case Else End Select Result = Result & GetDigit(Right(TensText, 1)) 'Retrieve ones place End If GetTens = Result End Function 'Converts a number from 1 to 9 into text Private Function GetDigit(Digit As String) Select Case Val(Digit) Case 1: GetDigit = "One" Case 2: GetDigit = "Two" Case 3: GetDigit = "Three" Case 4: GetDigit = "Four" Case 5: GetDigit = "Five" Case 6: GetDigit = "Six" Case 7: GetDigit = "Seven" Case 8: GetDigit = "Eight" Case 9: GetDigit = "Nine" Case Else: GetDigit = "" End Select End Function End Class