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date: Wed, 4 Jun 2008 16:02:37 +0100,
group: microsoft.public.platformsdk.mapi
back
Re: MAPI in mutithreading environments
If I just create the session on the main thread without logging on on the
other thread I do
Dim objSession As MAPI.Session = New MAPI.Session
objSession.MAPIOBJECT = MAPISession.GetSession.MAPIOBJECT /////ERRROR
[Collaboration Data Objects - [MAPI_E_NOT_INITIALIZED(80040605)]]
If I log on on the main thread, I dont really want to do that though, I get
Dim objSession As MAPI.Session = New MAPI.Session
objSession.MAPIOBJECT = MAPISession.GetSession.MAPIOBJECT
objSession.Logon(ProfileInfo:=mbox.Server & vbLf & mbox.Alias) //////ERROR
[Collaboration Data Objects - [MAPI_E_LOGON_FAILED(80040111)]]
I get this because I try to log on again on another server using the same
mapi session.
The requirement for my app is: I'm given a list of mailboxes(email, alias,
server, etc) loop through them and connect to the corresponding server and
get all the unread messages.
If this is not possible with MAPI, and given the fact that MAPI is not
supported how else can I do it?
Thanks,
Cosmin
"Dmitry Streblechenko" wrote in message
news:uhjSfxyxIHA.1936@TK2MSFTNGP04.phx.gbl...
> The error is RPC_E_CHANGED_MODE.
> You can create a session on the main thread, log on, then create
> MAPI.Session on the secondary thread and set Session.MAPIOBJECT to that
> from the main thread.
> The very first thread in a process that calls MAPIInitialize is assumed to
> be the main thread from the MAPI point of view. MAPI uses it to dispatch
> notifications etc.
> The fact that a book demonstrates how to use CDO 1.21 in .Net does not
> mean MS supports that :-)
> --
> Dmitry Streblechenko (MVP)
> http://www.dimastr.com/
> OutlookSpy - Outlook, CDO
> and MAPI Developer Tool
> -
> "Cosmin Onea" wrote in message
> news:uzbBzLuxIHA.5520@TK2MSFTNGP06.phx.gbl...
>> If I don't do session = new MAPI.Session() on the main thread I get this:
>> Retrieving the COM class factory for component with CLSID
>> {3FA7DEB3-6438-101B-ACC1-00AA00423326} failed due to the following error:
>> 80010106.
>>
>> If I get the session on the main thread I can't call LogOff on any other
>> thread. Most probably because the main thread is waiting for a
>> key(console application) to exit so the STA the session lives in can't
>> pump messages.
>>
>> No problems if I do everything on the main thread but that's not what I
>> want because I have other things to do and eventually the console
>> application will become a windows service.
>>
>> I read that they don't support 1.21 in .NET but in the same time I read a
>> book that presents .net samples of mapi applications.
>>
>> Cheers,
>> Cosmin
>>
>> "Dmitry Streblechenko" wrote in message
>> news:eU$4gGnxIHA.548@TK2MSFTNGP06.phx.gbl...
>>> MAPI.Session will call MAPIInitialize internally.
>>> What is the exact error that you get?
>>> You do know that MS does not support CDO 1.21 from .Net, right?
>>>
>>> --
>>> Dmitry Streblechenko (MVP)
>>> http://www.dimastr.com/
>>> OutlookSpy - Outlook, CDO
>>> and MAPI Developer Tool
>>> -
>>> "Cosmin Onea" wrote in message
>>> news:ec5FIRlxIHA.2208@TK2MSFTNGP04.phx.gbl...
>>>> Hi,
>>>>
>>>> I'm trying to use MAPI in a windows service but I've got the
>>>> multithreading problem when trying to use the session on a separate
>>>> thread(timer tick event). If I run everything on the main thread
>>>> (STAThread) everything works great.
>>>>
>>>> In the documentation it says that MAPIInitialize() should be called on
>>>> each thread you intend to use mapi in. How can I do this from .NET?
>>>> What is the coresponding method in .NET?
>>>>
>>>> I get the errors when I try to create a session instance like:
>>>> objSession = new MAPI.Session()
>>>>
>>>> This works in the main thread but if I do that again on any other
>>>> thread it crashes. I tried to cache the session object in the main
>>>> thread and reuse it everywhere but objSession.LogOff() get in an
>>>> infinite loop internally.
>>>>
>>>> Thanks,
>>>> Cosmin
>>>>
>>>
>>>
>>
>>
>
>
date: Fri, 6 Jun 2008 10:32:26 +0100
author: Cosmin Onea
Re: MAPI in mutithreading environments
Why do you set the MAPIOBJECT property *before* calling Logon?
As a rule of thumb, since EX provider uses the identity of the current
Windows (process) user to authenticate with Exchange, you must run your code
as the user specified in the call to Logon (who owns the mailbox in
question). In other words, connecting to different mailboxes simultaneously
won't work with MAPI.
On the Extended MAPI level, you could connect to the current (admin) user
mailbox first, then open other users' mailboxes using IExchangeManageServer,
but CDO 1.21 won' let you do that.
<plug>You can try Redemption for that - call RDOSession.LogonExchangeMailbox
for the current (admin) user, you can then open other mailboxes using
RDOSession.Stores.GetSharedMailbox. You could log to the admin's mailbox on
the main thread, but open other mailboxes on the secondary thread by
creating a new instance of RDOSession (to make sure MAPI gets initialized),
setting RDOSessioon.MAPIOBJECT to that from the main thread, then opening
other user's mailbox using RDOSession.Stores.GetSharedMailbox.
</plug>
--
Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool
-
"Cosmin Onea" wrote in message
news:O446Bi7xIHA.1436@TK2MSFTNGP05.phx.gbl...
> If I just create the session on the main thread without logging on on the
> other thread I do
> Dim objSession As MAPI.Session = New MAPI.Session
> objSession.MAPIOBJECT = MAPISession.GetSession.MAPIOBJECT /////ERRROR
>
> [Collaboration Data Objects - [MAPI_E_NOT_INITIALIZED(80040605)]]
>
> If I log on on the main thread, I dont really want to do that though, I
> get
> Dim objSession As MAPI.Session = New MAPI.Session
> objSession.MAPIOBJECT = MAPISession.GetSession.MAPIOBJECT
> objSession.Logon(ProfileInfo:=mbox.Server & vbLf & mbox.Alias) //////ERROR
>
> [Collaboration Data Objects - [MAPI_E_LOGON_FAILED(80040111)]]
>
> I get this because I try to log on again on another server using the same
> mapi session.
> The requirement for my app is: I'm given a list of mailboxes(email, alias,
> server, etc) loop through them and connect to the corresponding server and
> get all the unread messages.
>
> If this is not possible with MAPI, and given the fact that MAPI is not
> supported how else can I do it?
>
> Thanks,
> Cosmin
>
>
> "Dmitry Streblechenko" wrote in message
> news:uhjSfxyxIHA.1936@TK2MSFTNGP04.phx.gbl...
>> The error is RPC_E_CHANGED_MODE.
>> You can create a session on the main thread, log on, then create
>> MAPI.Session on the secondary thread and set Session.MAPIOBJECT to that
>> from the main thread.
>> The very first thread in a process that calls MAPIInitialize is assumed
>> to be the main thread from the MAPI point of view. MAPI uses it to
>> dispatch notifications etc.
>> The fact that a book demonstrates how to use CDO 1.21 in .Net does not
>> mean MS supports that :-)
>> --
>> Dmitry Streblechenko (MVP)
>> http://www.dimastr.com/
>> OutlookSpy - Outlook, CDO
>> and MAPI Developer Tool
>> -
>> "Cosmin Onea" wrote in message
>> news:uzbBzLuxIHA.5520@TK2MSFTNGP06.phx.gbl...
>>> If I don't do session = new MAPI.Session() on the main thread I get
>>> this:
>>> Retrieving the COM class factory for component with CLSID
>>> {3FA7DEB3-6438-101B-ACC1-00AA00423326} failed due to the following
>>> error: 80010106.
>>>
>>> If I get the session on the main thread I can't call LogOff on any other
>>> thread. Most probably because the main thread is waiting for a
>>> key(console application) to exit so the STA the session lives in can't
>>> pump messages.
>>>
>>> No problems if I do everything on the main thread but that's not what I
>>> want because I have other things to do and eventually the console
>>> application will become a windows service.
>>>
>>> I read that they don't support 1.21 in .NET but in the same time I read
>>> a book that presents .net samples of mapi applications.
>>>
>>> Cheers,
>>> Cosmin
>>>
>>> "Dmitry Streblechenko" wrote in message
>>> news:eU$4gGnxIHA.548@TK2MSFTNGP06.phx.gbl...
>>>> MAPI.Session will call MAPIInitialize internally.
>>>> What is the exact error that you get?
>>>> You do know that MS does not support CDO 1.21 from .Net, right?
>>>>
>>>> --
>>>> Dmitry Streblechenko (MVP)
>>>> http://www.dimastr.com/
>>>> OutlookSpy - Outlook, CDO
>>>> and MAPI Developer Tool
>>>> -
>>>> "Cosmin Onea" wrote in message
>>>> news:ec5FIRlxIHA.2208@TK2MSFTNGP04.phx.gbl...
>>>>> Hi,
>>>>>
>>>>> I'm trying to use MAPI in a windows service but I've got the
>>>>> multithreading problem when trying to use the session on a separate
>>>>> thread(timer tick event). If I run everything on the main thread
>>>>> (STAThread) everything works great.
>>>>>
>>>>> In the documentation it says that MAPIInitialize() should be called on
>>>>> each thread you intend to use mapi in. How can I do this from .NET?
>>>>> What is the coresponding method in .NET?
>>>>>
>>>>> I get the errors when I try to create a session instance like:
>>>>> objSession = new MAPI.Session()
>>>>>
>>>>> This works in the main thread but if I do that again on any other
>>>>> thread it crashes. I tried to cache the session object in the main
>>>>> thread and reuse it everywhere but objSession.LogOff() get in an
>>>>> infinite loop internally.
>>>>>
>>>>> Thanks,
>>>>> Cosmin
>>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>
>
date: Fri, 6 Jun 2008 10:15:35 -0700
author: Dmitry Streblechenko
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