Here is a sample program to ask the user to give a number and then it will convert in Roman Numeral equivalent using Microsoft Visual Basic NET. The code is very short and easy to understand. Thank you.
My mobile number here in the Philippines is 09173084360.
Sample Program Output
Program Listing
Public Class Form1
Private Function ConvertRoman(ByVal n As Integer) As String
If n = 0 Then ConvertRoman = "0" : Exit Function
Const r = "IVXLCDM"
Dim i As Integer = Math.Abs(n)
Dim s As String = ""
For p As Integer = 1 To 5 Step 2
Dim d As Integer = i Mod 10
i = i \ 10
Select Case d '
Case 0 To 3 : s = s.PadLeft(d + Len(s), Mid(r, p, 1))
Case 4 : s = Mid(r, p, 2) & s
Case 5 To 8 : s = Mid(r, p + 1, 1) & s.PadLeft(d - 5 + Len(s), Mid(r, p, 1))
Case 9 : s = Mid(r, p, 1) & Mid(r, p + 2, 1) & s
End Select
Next
s = s.PadLeft(i + Len(s), "M")
If n < 0 Then s = "-" & s
ConvertRoman = s
End Function
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Label2.Text = " The equivalent value of " & TextBox1.Text & " is " & ConvertRoman(TextBox1.Text) & "."
End Sub
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
TextBox1.Text = ""
Label2.Text = ""
TextBox1.Focus()
End Sub
Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click
End
End Sub
End Class
