Hi,
I'm encountering a similar problem. I have a VB6 app that launches a
single instance .NET exe [using the check box provided for this]. The
VB6 app attempts to launch the .net exe or if it finds it's already
launched [by checking the window title], it just brings it to the
foreground.
Doing this repetedly causes the .net app to raise an error, with the
'send bug report' dialog. Checking the event log on one occasion, gave
the details below. Any ideas what the problem is and what I can do.
This is on Win XP sp2 and .NET framework 2.0.
EventType clr20r3, P1 mydotnetapp.exe, P2 1.0.0.0, P3 43218038, P4
mscorlib, P5 2.0.0.0, P6 425749d8, P7 40a8, P8 27, P9
system.badimageformatexception, P10 NIL.
Regards,
Timothy.
Steven Cheng[MSFT] wrote:[color=blue]
> Thanks for your followup MrSpock,
>
> So far I haven't any other ideas on this. If possible I'd suggest you
> rebuild a clean XP environment for testing... Most likely such problem is
> a environment specific issue...
>
> regards,
>
> Steven Cheng
> Microsoft Online Support
>
> Get Secure!
www.microsoft.com/security
> (This posting is provided "AS IS", with no warranties, and confers no
> rights.)
>
>
>
> --------------------
> | Thread-Topic: VS2005: "Make single instance application"
> | thread-index: AcX2TK1NtbqTCUhnTquYEPksmEifVA==
> | X-WBNR-Posting-Host: 62.181.97.149
> | From: "=?Utf-8?B?TXJTcG9jaw==?=" <MrSpock@nospam.nospam>
> | References: <4AAC908C-0175-4856-8E68-64EBBF54DE0F@microsoft.com>
> <eknofD#8FHA.1240@TK2MSFTNGXA02.phx.gbl>
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> <#nj29NZ9FHA.1240@TK2MSFTNGXA02.phx.gbl>
> <ueFEafi9FHA.4028@TK2MSFTNGXA02.phx.gbl>
> | Subject: RE: VS2005: "Make single instance application"
> | Date: Wed, 30 Nov 2005 23:56:03 -0800
> | Lines: 86
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> |
> | Mr Cheng,
> |
> | Thanks for your efforts! I will have to use some other solution for the
> | single instance feature in my applications, but it would be nice to know
> the
> | cause to this error though.
> |
> | Best regards,
> |
> | MrSpock
> |
> |
> | "Steven Cheng[MSFT]" wrote:
> |
> | > Hi MrSpock,
> | >
> | > After some further tests on my local XP environment, I think this
> should be
> | > a envionement specific problem since a typical VB.NET winform app with
> | > single instance flag turned on can run correctly on XP box.
> | >
> | > Thanks,
> | >
> | > Steven Cheng
> | > Microsoft Online Support
> | >
> | > |
> | > | Thanks for your response MrSpock,
> | > |
> | > | I don't think this will be a existing or by design behavior for XP
> | > | platform.. I'll try perform some further test in my local
> envionrment
> | > and
> | > | let you know my result soon.
> | > |
> | > | Regards,
> | > |
> | > | Steven Cheng
> | > | Microsoft Online Support
> | > |
> | > | |
> | > | | Thanks for your answer, Mr Cheng.
> | > | |
> | > | | My first test was performed on WinXP SP2 with .NET 2.0.
> | > | |
> | > | | Today I did a clean install of VS2005 on another dev box (WinXP
> SP2,
> | > .NET
> | > | | 2.0). I got the same error this time!
> | > | |
> | > | | Later I copied the same executable to another box running Win2k3.
> No
> | > | errors
> | > | | this time!
> | > | |
> | > | | I suppose the "single instance" option isn't fully functional on
> WinXP,
> | > | right?
> | > | |
> | > | | Best regards,
> | > | |
> | > | | MrSpock
> | > | |
> | > | |
> | > | | "Steven Cheng[MSFT]" wrote:
> | > | |
> | > | | > Hi MrSpock,
> | > | | >
> | > | | > Regarding on the VB.NET single instance winform application
> problem,
> | > | I've
> | > | | > just performed some tests on my local side(win2k3server .net 2.0
> | > | vs2005),
> | > | | > seems I can not reproduce the
> | > | | > ===========
> | > | | > Debug info: "Unhandled exception at 0x00e149fd in
> | > | WindowsApplication1.exe:
> | > | | > 0xC0000005: Access violation writing location 0x00000000."
> | > | | > ===========
> | > | | >
> | > | | > error by try launching the winform app(exe) multiple times. I'm
> not
> | > | sure
> | > | | > whether there're any other particular steps when you reproduce
> this
> | > | | > behavor? My test winform is just a simple application with a
> empty
> | > | form in
> | > | | > it. In addition, have you tried this on some other dev box to
> see
> | > | whether
> | > | | > you also encounter this error?
> | > | | >
> | > | | > Thanks,
> | > | | >
> | > | | > Steven Cheng
> | > | | > Microsoft Online Support
> |[/color]
