Imports System
Imports System.Text
Imports System.Text.RegularExpressions
Public Class MainClass
Shared Sub Main(ByVal args As String())
Try
Console.WriteLine("Open file here")
Dim a As Double = 5
Dim b As Double = 0
Console.WriteLine("{0} / {1} = {2}", a, b, DoDivide(a, b))
Console.WriteLine("This line may or may not print")
' most derived exception type first
Catch e As System.DivideByZeroException
Console.WriteLine( _
"DivideByZeroException! Msg: {0}", e.Message)
Console.WriteLine( _
"Helplink: {0}", e.HelpLink)
Console.WriteLine( _
"Stack trace: {0}", e.StackTrace)
Catch
Console.WriteLine("Unknown exception caught!")
Finally
Console.WriteLine("Close file here.")
End Try
End Sub
' do the division if legal
Shared Public Function DoDivide( _
ByVal a As Double, ByVal b As Double) As Double
If b = 0 Then
Dim e As New System.DivideByZeroException( )
e.HelpLink = "http://www.rntsoft.com"
Throw e
End If
If a = 0 Then
Throw New System.ArithmeticException( )
End If
Return a / b
End Function 'DoDivide
End Class