[RESOLVED] SELECT CASE on Exceptions

[simonm]

I have an exception object.

I want to do a select case to perform certain activities in cases when the exception is of a specific type.

So how would I structure such a SELECT CASE block?

For instance:

Select Case ex
Case System.StackOverflowException
 
Case System.ObjectDisposedException
 
End Select

Obviously, the above doesn't work but you get the idea...

[Atheist]

Build your try block to catch all the different kind of exceptions.

Try
 
catch exSO as StackOverflowException
'overflow occured
catch exOD as ObjectDisposedException
'etc etc
End Try

now youll know what exception occured.

[simonm]

No, I can't use that method because the exception is passed into another procedure.

In other words, the place where I am interrogating the exception is not where the exception occurred (nor can that be helped).

[jmcilhinney]

What you're asking for is not possible because the Select Case syntax doesn't support it. You can do this:

Select Case True
    Case TypeOf ex Is StackOverflowException
 
    Case TypeOf ex Is ObjectDisposedException
 
End Select

but that gains you nothing over regular If...ElseIf statements.

[simonm]

Great thanks. That's just what I want.