Simple Class to Convert Numbers into Text






2.20/5 (5 votes)
Takes numbers up to hundreds of trillions and converts them into text
Introduction
This is a basic class that can be used to convert numbers to their equivalent word form.
Background
I often saw, on the VB.Net forums, requests for a number to text conversion class, so I decided to make one. This converts any number from 0 to 999999999999.
Using the code
The code is very simple to use. Simply add the class to your program and call NumeriCon.ConvertNum(Input)
and pass the number desired to be converted as the Input
.
Textbox1.Text = NumeriCon.ConvertNum("878391279")
Full Code
Public Class NumeriCon
Public Shared Function ConvertNum(ByVal Input As Long) As String 'Call this function passing the number you desire to be changed
Dim output As String = Nothing
If Input < 1000 Then
output = FindNumber(Input) 'if its less than 1000 then just look it up
Else
Dim nparts() As String 'used to break the number up into 3 digit parts
Dim n As String = Input 'string version of the number
Dim i As Long = Input.ToString.Length 'length of the string to help break it up
Do Until i - 3 <= 0
n = n.Insert(i - 3, ",") 'insert commas to use as splitters
i = i - 3 'this insures that we get the correct number of parts
Loop
nparts = n.Split(",") 'split the string into the array
i = Input.ToString.Length 'return i to initial value for reuse
Dim p As Integer = 0 'p for parts, used for finding correct suffix
For Each s As String In nparts
Dim x As Long = CLng(s) 'x is used to compare the part value to other values
p = p + 1
If p = nparts.Length Then 'if p = number of elements in the array then we need to do something different
If x <> 0 Then
If CLng(s) < 100 Then
output = output & " And " & FindNumber(CLng(s)) ' look up the number, no suffix
Else ' required as this is the last part
output = output & " " & FindNumber(CLng(s))
End If
End If
Else 'if its not the last element in the array
If x <> 0 Then
If output = Nothing Then 'we have to check this so we don't add a leading space
output = output & FindNumber(CLng(s)) & " " & FindSuffix(i, CLng(s)) 'look up the number and suffix
Else 'spaces must go in the right place
output = output & " " & FindNumber(CLng(s)) & " " & FindSuffix(i, CLng(s)) 'look up the snumber and suffix
End If
End If
End If
i = i - 3 'reduce the suffix counter by 3 to step down to the next suffix
Next
End If
Return output
End Function
Private Shared Function FindNumber(ByVal Number As Long) As String
Dim Words As String = Nothing
Dim Digits() As String = {"Zero","One","Two","Three","Four","Five","Six","Seven", _
"Eight","Nine","Ten"}
Dim Teens() As String = {"", "Eleven", "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen", _
"Eighteen", "Nineteen"}
If Number < 11 Then
Words = Digits(Number)
ElseIf Number < 20 Then
Words = Teens(Number - 10)
ElseIf Number = 20 Then
Words = "Twenty"
ElseIf Number < 30 Then
Words = "Twenty " & Digits(Number - 20)
ElseIf Number = 30 Then
Words = "Thirty"
ElseIf Number < 40 Then
Words = "Thirty " & Digits(Number - 30)
ElseIf Number = 40 Then
Words = "Fourty"
ElseIf Number < 50 Then
Words = "Fourty " & Digits(Number - 40)
ElseIf Number = 50 Then
Words = "Fifty"
ElseIf Number < 60 Then
Words = "Fifty " & Digits(Number - 50)
ElseIf Number = 60 Then
Words = "Sixty"
ElseIf Number < 70 Then
Words = "Sixty " & Digits(Number - 60)
ElseIf Number = 70 Then
Words = "Seventy"
ElseIf Number < 80 Then
Words = "Seventy " & Digits(Number - 70)
ElseIf Number = 80 Then
Words = "Eighty"
ElseIf Number < 90 Then
Words = "Eighty " & Digits(Number - 80)
ElseIf Number = 90 Then
Words = "Ninety"
ElseIf Number < 100 Then
Words = "Ninety " & Digits(Number - 90)
ElseIf Number < 1000 Then
Words = Number.ToString
Words = Words.Insert(1, ",")
Dim wparts As String() = Words.Split(",")
Words = FindNumber(wparts(0)) & " " & "Hundred"
Dim n As String = FindNumber(wparts(1))
If CLng(wparts(1)) <> 0 Then
Words = Words & " And " & n
End If
End If
Return Words
End Function
Private Shared Function FindSuffix(ByVal Length As Long, ByVal l As Long) As String
Dim word As String
If l <> 0 Then
If Length > 12 Then
word = "Trillion"
ElseIf Length > 9 Then
word = "Billion"
ElseIf Length > 6 Then
word = "Million"
ElseIf Length > 3 Then
word = "Thousand"
ElseIf Length > 2 Then
word = "Hundred"
Else
word = ""
End If
Else
word = ""
End If
Return word
End Function
End Class
History
Uploaded - 11-2-2009