Imports System
Imports System.Text
Imports System.Text.RegularExpressions
Public Class MainClass
Shared Sub Main( )
Try
Console.WriteLine("Open file here")
Dim a As Double = 0
Dim b As Double = 5
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)
' catch custom exception
Catch e As MyCustomException
Console.WriteLine( _
"MyCustomException! Msg: {0}", e.Message)
Console.WriteLine("HelpLink: {0}", e.HelpLink)
Catch ' catch any uncaught exceptions
Console.WriteLine("Unknown exception caught")
Finally
Console.WriteLine("Close file here.")
End Try
End Sub 'Main
Shared Public Function DoDivide(ByVal a As Double, ByVal b As Double) As Double
If b = 0 Then
Throw New System.DivideByZeroException( )
End If
If a = 0 Then
Throw New System.ArithmeticException( )
End If
Return a / b
End Function
End Class
Public Class MyCustomException
Inherits System.ApplicationException
Public Sub New(ByVal message As String)
MyBase.New(message)
End Sub
End Class