Unhandled exception

12 May 2006 1:43 PM

NickP

Hi there,

    Im experiencing an unhandled exception that seems to be impossible for
me to catch. I am launching an assembly of mine from within another
assembly using the Process object. Once the process finishes it causes an
unhandled exception, even though both host and child process have all thread
exceptions handled.

    Unfortunately this is making debugging a complete and utter nightmare as
the application has already terminated by the time the standard unhandled
excaption dialog appears with this info in...

    EventType : clr20r3     P1 : <child assembly>     P2 : 1.3.2323.22525
P3 : 44648dad
P4 : mscorlib     P5 : 2.0.0.0     P6 : 4333ab80     P7 : 11d0     P8 : 27
P9 : system.applicationexception

    Any ideas what this is supposed to mean exactly? It has no relevance to
me but if I could just know what the exception is exactly then this could
help, "applicationexception" doesn't help me in the slightest as i have 3
assemblies that derive from said applicationexception that are being used
during this process.

    I can only presume that this error could be down to the disposing of an
object by the garbage collector, I cant think of any other reason why code
would remain to be processed after the last line of code has been passed..

    Thanks loads in advance if anyone can help me with this.

Nick.

12 May 2006 2:07 PM

NickP

Hi there,

Just to add, I've managed to get rid of the exception by disposing a
specific object before the application exits. The object was only disposing
a mutex so I'm not quite sure how this would cause an exception at garbage
collection time.. Anyway, it's gone now so I guess I shouldn't complain!

Nick.

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"NickP" <a@a.com> wrote in message
news:uGTXPocdGHA.3908@TK2MSFTNGP04.phx.gbl...
> Hi there,
>
>    Im experiencing an unhandled exception that seems to be impossible for
> me to catch. I am launching an assembly of mine from within another
> assembly using the Process object. Once the process finishes it causes an
> unhandled exception, even though both host and child process have all
> thread exceptions handled.
>
>    Unfortunately this is making debugging a complete and utter nightmare
> as the application has already terminated by the time the standard
> unhandled excaption dialog appears with this info in...
>
>    EventType : clr20r3     P1 : <child assembly>     P2 : 1.3.2323.22525
> P3 : 44648dad
> P4 : mscorlib     P5 : 2.0.0.0     P6 : 4333ab80     P7 : 11d0     P8 : 27
> P9 : system.applicationexception
>
>    Any ideas what this is supposed to mean exactly? It has no relevance
> to me but if I could just know what the exception is exactly then this
> could help, "applicationexception" doesn't help me in the slightest as i
> have 3 assemblies that derive from said applicationexception that are
> being used during this process.
>
>    I can only presume that this error could be down to the disposing of an
> object by the garbage collector, I cant think of any other reason why code
> would remain to be processed after the last line of code has been passed..
>
>    Thanks loads in advance if anyone can help me with this.
>
> Nick.
>

12 May 2006 2:18 PM

jayeldee

Nick,
You could use the AppDomain object to register a handler for Unhandled
Exceptions in your app, allowing you to see more detail about the
problem you're occuring.

Module Module1

    Sub Main()

        AddHandler AppDomain.CurrentDomain.UnhandledException,
AddressOf Unhandled

        Throw New Exception("Unhandled Exception")

    End Sub

    Private Sub Unhandled(ByVal sender As Object, ByVal e As
UnhandledExceptionEventArgs)

        Console.WriteLine("Unhandled Exception of Type " &
e.ExceptionObject.GetType.ToString)
        Console.WriteLine(e.ExceptionObject.ToString)
        Console.ReadLine()

    End Sub

End Module

john

15 May 2006 11:04 AM

NickP

Hi John,

Indeed I have been, and also the thread exception. But neither would
catch this exception, I believe it was because the application had already
terminated and it was occuring during garbage collection. All sorted now
though thankfully, cheers for your input.

Nick.

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"jayeldee" <jayel***@gmail.com> wrote in message
news:1147443512.715632.223120@d71g2000cwd.googlegroups.com...
> Nick,
> You could use the AppDomain object to register a handler for Unhandled
> Exceptions in your app, allowing you to see more detail about the
> problem you're occuring.
>
>
> Module Module1
>
>    Sub Main()
>
>        AddHandler AppDomain.CurrentDomain.UnhandledException,
> AddressOf Unhandled
>
>        Throw New Exception("Unhandled Exception")
>
>    End Sub
>
>    Private Sub Unhandled(ByVal sender As Object, ByVal e As
> UnhandledExceptionEventArgs)
>
>        Console.WriteLine("Unhandled Exception of Type " &
> e.ExceptionObject.GetType.ToString)
>        Console.WriteLine(e.ExceptionObject.ToString)
>        Console.ReadLine()
>
>    End Sub
>
> End Module
>
>
> john
>