Re: RDO objects and C#

Hello Dmitry,

I'm using GC.Collect and modified my code to remove multiple dot notations
(e.g. rdoFolder.Items.count) but still I'm getting an error for
"MAPI_E_CALL_FAILED".

This is happening especially for RDOMail object.

My code for it reads as

====================================================
Queue DeleteEMailQueue = new Queue();
RDOItems rdoItems = rdoFolder.Items;
for (int i = 0; i < rdoItems.Count; i++)
{
RDOMail rdoMail = rdoFolder.Items[i];
try
{
// check if email can be deleted
if (DeleteEmail(rdoMail.UnRead, rdoMail.ReceivedTime,
rdoMail.Mileage))
{
rdoMail.Delete(0);
}
}
catch (Exception ex)
{
Util.LogException(ex);
}
finally
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(rdoMail);
rdoMail = null;
GC.Collect();
}
====================================================

The error occurs after reading say around 700/800 emails in one folder.

Can you please suggest any workaround for this?

Thanks and Regards,
Amit Kathane

"Dmitry Streblechenko" wrote:

You are most likely running out of the RPC channel limit
(http://support.microsoft.com/kb/830829) - since .Net does not release COM
objects immediately, you can easily go over the limit even if you explicitly
release COM objects using Marshal.ReleaseCOMObject.
Avoid using multiple dot notation (e.g. rdoFolder.Items.Count) to make sure
the compiler does not create implicit variables that you cannot reference
and release.
GC.Collect() might help.
Next version of Redemption (send me an e-mail if you want a beta version)
will keep track of the open MAPI objeects and transparently release oldest
unmodified MAPI objects that can be easily reopened on demand (Redemption
objects will stay alive of course) when the number of open objects of a
particular kind approaches the limit.

Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool

"AK" <AK@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:0D7CB539-49DA-4449-A26B-09CB2DB2CD8F@xxxxxxxxxxxxxxxx
Hello Dmitry,

Thank you very much for your assistance.

I'm getting following error randomly.

"Error in IMAPIFolder.GetContentsTable: MAPI_E_CALL_FAILED"

Please find below my code

======================================
private static void ProcessUserMailbox(string userName)
{
RDOSession rdoSession = new RDOSessionClass();
try
{
// get the admin user name from the configuration file
string systemUserName =
Properties.Settings.Default.userName;
string exchangeSrvrName =
Properties.Settings.Default.UserMailboxServer;

if (string.IsNullOrEmpty(systemUserName))
systemUserName =
WindowsIdentity.GetCurrent().Name.ToString();

rdoSession.LogonExchangeMailbox(systemUserName,
exchangeSrvrName);
IRDOFolder rootFolder =
rdoSession.GetSharedMailbox(userName).RootFolder;

// iterate through all folders and subfolders
RDOFolders rdoFolders = rootFolder.Folders;
if (rdoFolders != null)
{
RDOFolder rdoFolder = rdoFolders.GetFirst();
if (rdoFolder != null)
{
// iterate folder list
for (int i = 0; i < rdoFolders.Count; i++)
{
// process the individual folder to search for
emails that can be deleted
ProcessFolder(userName, rootFolder.Name + " >
",
rdoFolder);
rdoFolder = rdoFolders.GetNext();
}
}
}
// release the COM object for the root folder.

System.Runtime.InteropServices.Marshal.ReleaseComObject(rootFolder);
rootFolder = null;
}
catch (Exception ex)
{
StringBuilder strInfo = new
StringBuilder(string.Format("{0}, Failed to process mailbox for user :
{0}",
userName));
Util.LogMessage(strInfo.ToString());
Util.LogException(ex);
strInfo.AppendFormat(ex.Message + Environment.NewLine +
Util.GetInnerException(ex));
throw new ApplicationException(strInfo.ToString());
}
finally
{
rdoSession.Logoff();

System.Runtime.InteropServices.Marshal.ReleaseComObject(rdoSession);
rdoSession = null;
GC.Collect();
}
}

private static void ProcessFolder(string userName, string
folderPath, RDOFolder rdoFolder)
{
RDOFolders subFolders;
RDOFolder subFolder;

try
{
subFolders = rdoFolder.Folders;
if (subFolders != null)
{
subFolder = subFolders.GetFirst();
if (subFolder != null)
{
// iterate sub folder list
for (int i = 0; i < subFolders.Count; i++)
{
// process the subfolder
ProcessFolder(userName, rdoFolder.Name + "
>
", subFolder);
subFolder = subFolders.GetNext();
}
}
}
// if found an individual folder (rdoFolder) without
the
subfolder then release the subfolder and subfolders COM objects

//System.Runtime.InteropServices.Marshal.ReleaseComObject(subFolder);
subFolder = null;

System.Runtime.InteropServices.Marshal.ReleaseComObject(subFolders);
subFolders = null;

// if there are no sub folders then process the
rdoFolder and iterate through all items
// process the individual items/emails in the folder
for (int i = 0; i < rdoFolder.Items.Count; i++)
{
RDOMail rdoMail = rdoFolder.Items[i];
try
{
// check if email can be deleted
if (DeleteEmail(rdoMail.UnRead,
rdoMail.ReceivedTime, rdoMail.Mileage))
{
Util.LogMessage(string.Format("{0}, Email
with subject '{1}' Read : '{2}' Received Time : '{3}' Mileage : '{4}' is
deleted.", userName, rdoMail.Subject, !(rdoMail.UnRead),
rdoMail.ReceivedTime, rdoMail.Mileage));
if (DeleteMail)
rdoMail.Delete(0); //dfSoftDelete (0) -
default. Deletes the item. Can still be recoverable if retention policy is
set on Exchange Server.

//dfMoveToDeletedItems
(1) - the item is moved to the Deleted Items folder
//dfHardDelete (2) -
Exchange only. Permanently deletes the item; will not be recoverable
}
}
catch (Exception ex)
{
// in case of exception for processing
individual mail log the exception and process next email
Util.LogException(ex);
}
finally
{

//System.Runtime.InteropServices.Marshal.ReleaseComObject(rdoMail);
rdoMail = null;
}
}
}
catch (Exception ex)
{
StringBuilder strInfo = new
StringBuilder(string.Format("{1}, Failed to process folder : {0} for user
:
{1}", rdoFolder.Name, userName));
Util.LogMessage(strInfo.ToString());
Util.LogException(ex);
}
finally
{

System.Runtime.InteropServices.Marshal.ReleaseComObject(rdoFolder);
rdoFolder = null;
}
}
==================================================

The above error is coming for some of the emails for user. Can you please
let me know what could be the reason of this error.

Thanks and Regards,
Amit Kathane

"Dmitry Streblechenko" wrote:

1. Exchange transparently manages the locatiton of the mailboxes. It will
list all mailboxes in the organization. As an extra check, you might want
to
read the PR_EMS_AB_HOME_MDB property using RDOAddressEntry.Fields[] (the
property returns the name of the server where teh user has a mailbox) -
there can be entries that have no mailboxes.
2. Yes, use either (but not both) Logon or LogonExchangeMailbox. Or set
the
MAPIOBJECT property if you already have a running instance of Outlook
(use
Namespace.MAPIOBJECT) or CDO 1.21 session (Session.MAPIOBJECT).

Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool

"AK" <AK@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:319E9C32-4D06-4142-B3A7-15A4FB7F6581@xxxxxxxxxxxxxxxx
Hello Dmitry,

Thank you very much for your reply.

According to your solution mentioned in one of the above responses i.e.

1. Run your code under the Windows user identity who can access all of
the
required mailboxes
2. Call RDOSession.Logon if you have an existing profilee pointing to
that
user's mailbox or call RDOSession.LogonExchangeMailbox
3. Loop through the entries in the RDOSession.AddressBook.GAL;
4. For each RDOAddressEntry with DisplayType property equal to
DT_MAILUSER
(= 0)
5. Call RDOSession.GetSharedMailbox passing that RDOAddressEntry object
(get
back RDOExchangeMailboxStore)
6. Loop through all subfolder and messages in tha tmailbox store
stating
with the RDOStore.IPMRootFolder collection

Will there be problem in step 3 and 4 if there is a multiple exchange
server
box in the domain and various users are configured with different
exchange
box. Will I still be able to get all user's RDOAddressEntry object in
RDOSession.AddressBook.GAL or will it give only those users which are
on
the
same exchange box as of the Windows user under which the application is
running?

Also I assume that RDOSession.Logon using the existing profile of using
RDOSession.LogonExchangeMailbox are exclusive. I guess I don't have to
create
the profile if it's not there and can use the
RDOSession.LogonExchangeMailbox
method instead. Is that right?

Many Thanks for your help.
Amit Kathane

"Dmitry Streblechenko" wrote:

Once again, see steps 1 and 2. You need to call LogonExchangeMailbox
*once*
for the current Windows user who must have the right to access othe
rmailboxes.
To access other mailboxess call RDOSession.GetSharedMailbox. Do *not*
call
LogonExchangeMailbox for the other mailboxes.

Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool

"AK" <AK@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:23E06401-006F-4B39-8068-2EEEEFCEE948@xxxxxxxxxxxxxxxx
Hi,

Thanks you very much for your reply.

I'm understanding bit of Redemeption library now.

One issue is when I'm trying to do login using
RDOSession.LogonExchangeMailbox

it's popping up the UI.

According to my requirement, I've to traverse through all mailbox
which
I
guess will require login into each mailbox and a pop up UI could be
an
issue?

This UI does not come when using RDOSession.Logon method, is there
anything
.

Relevant Pages

  • Re: RDO objects and C#
    ... RDOFolder rdoFolder = rdoFolders.GetFirst; ... RDOFolder subFolder; ... OutlookSpy - Outlook, CDO ... user's mailbox or call RDOSession.LogonExchangeMailbox ...
    (microsoft.public.outlook.interop)
  • Re: RDO objects and C#
    ... RDOFolder rdoFolder = rdoFolders.GetFirst; ... Failed to process mailbox for user: ... RDOFolder subFolder; ... MAPIOBJECT property if you already have a running instance of Outlook ...
    (microsoft.public.outlook.interop)
  • Re: RDO objects and C#
    ... OutlookSpy - Outlook, CDO ... The error occurs after reading say around 700/800 emails in one folder. ... RDOFolder rdoFolder = rdoFolders.GetFirst; ... RDOFolder subFolder; ...
    (microsoft.public.outlook.interop)
  • Re: RDO objects and C#
    ... When I'm trying to traverse through a folder and deleting the emails it is ... RDOFolder rdoFolder = rdoFolders.GetFirst; ... RDOFolder subFolder; ...
    (microsoft.public.outlook.interop)
  • Re: RDO objects and C#
    ... Queue DeleteEMailQueue = new Queue; ... The error occurs after reading say around 700/800 emails in one folder. ... RDOFolder rdoFolder = rdoFolders.GetFirst; ... RDOFolder subFolder; ...
    (microsoft.public.outlook.interop)