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Introduction.
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.
Requirements.
The following items describe the recommended hardware, software, network infrastructure, skills, prior knowledge, and service packs you will need.
- Windows 2000 Server
- IIS version 5.0
- Internet Explorer 5.5 or 6.0
To Get The Words For A Given Number.
By using this sample code in an IIS Server, we can have a web service which will convert a given number into it's equivalent in words. For example, if you are in need of a code which converts a total amount into words, such as, for $ 43.25, if you need the words like Forty three dollars and twenty five cents, you can use this web service.
Here goes the sample code for the same.
******************START****************** <%@ 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(ByVal myNumber As String) As String getWords = SpellNumber(myNumber) End Function
'Main Function Private Function SpellNumber(ByVal 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(ByVal 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(ByVal 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(ByVal 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 '***************************END*********************************** For making this as a web service,
- Open your Notepad
- Copy the code shown above and paste into the Notepad
- Save the file as NumberToWords.asmx into c:\InetPub\wwwroot folder in your System
- Run the web service by requesting for the file in the browser. (
http://localhost/NumberToWords.asmx)
Check the same by giving different numbers with decimals and invoking the service.
References
For more information about how to write, use web services in your web Application Development, browse to the following MSDN Web site: http://msdn.microsoft.com/webservices/
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