แปลงตัวเลขจำนวนเงิน (บาท) เป็นคำอ่านภาษาอังกฤษ

Option Explicit
'Main Function
Function ThaiBahtToText(ByVal MyNumber)

    Dim Baht, Satang, Temp
    Dim DecimalPlace, Count
    ReDim Place(9) As String
    Place(2) = " Thousand "
    Place(3) = " Million "
    Place(4) = " Billion "
    Place(5) = " Trillion "
    
    ' String representation of amount.
    MyNumber = Trim(Str(MyNumber))

    ' Position of decimal place 0 if none.
    DecimalPlace = InStr(MyNumber, ".")

    ' Convert Satang and set MyNumber to Baht amount.
    If DecimalPlace > 0 Then
        Satang = 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 Baht = Temp & Place(Count) & Baht
        
        If Len(MyNumber) > 3 Then
            MyNumber = Left(MyNumber, Len(MyNumber) - 3)
        Else
            MyNumber = ""
        End If

        Count = Count + 1
    Loop

    Select Case Baht
        Case ""
            Baht = "No Baht"
        Case "One"
            Baht = "One Baht"
        Case Else
            Baht = Baht & " Baht"
    End Select

    Select Case Satang
        Case ""
            Satang = ""
        Case "One"
            Satang = " and One Satang"
        Case Else
            Satang = " and " & Satang & " Satang"
    End Select

    ThaiBahtToText = Baht & Satang
    
End Function


' Converts a number from 100-999 into text
Function GetHundreds(ByVal MyNumber)

    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.
Function GetTens(TensText)

    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.
Function GetDigit(Digit)

    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