OutlookItemEvents ProcessRead not always called ?

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OutlookItemEvents ProcessRead not always called ?
 
TheNewCOMAddin Dev




Posts: 26
Joined: 2019-07-11
Hi,

I have the following code for a Outlook ADX Addin : I have setup an Outlook Items Events class and the AddinModule.css file has the following snippet.


 .... 
        private void ConnectToSelectedItem(Outlook.Selection selection)
        {
            DebugWriteLine("Inside : ConnectToSelectedItem");
            if (selection != null)
            {
                if (selection.Count == 1)
                {
                    try
                    {
                        // If its anything other that Mail. We don't support at this point.
                        if (selection[1] is Outlook.MailItem)
                        {
                            Outlook.MailItem item = (Outlook.MailItem)selection[1];

                            if (replyAllChecker.IsConnected)
                            {
                                replyAllChecker.RemoveConnection();
                                DebugWriteLine("Disconnected from the previously connected item.");
                            }
                            replyAllChecker.ConnectTo(item, true);
                            DebugWriteLine("Connected to this Outlook item.");
                        }
                        else
                        {
                            // If its anything other that Mail. We don't support at this point.
                            DebugWriteLine("Do not connect to this Outlook item.");
                        }
                    }
                    catch (Exception e) {
                        DebugWriteLine("CCCC");
                        DebugWriteLine(e.ToString());
                    }

                }
            }
        }

        private void adxOutlookAppEvents_ExplorerActivate(object sender, object explorer)
        {
            DebugWriteLine("The ExplorerActivate event has occurred.");
            Outlook.Explorer theExplorer = explorer as Outlook.Explorer;
            if (theExplorer != null)
            {
                Outlook.Selection selection = null;
                try
                {
                    if (theExplorer.Selection != null)
                    {
                        selection = theExplorer.Selection;

                        if (selection != null)
                        {
                            DebugWriteLine("Trying ConnectToSelectedItem.");
                            ConnectToSelectedItem(selection);
                            //if (selection != null) Marshal.ReleaseComObject(selection);
                        }
                    }
                }
                catch(Exception e) {
                    DebugWriteLine("FFFF");
                    if (selection != null) Marshal.ReleaseComObject(selection);
                    //if (theExplorer != null) Marshal.ReleaseComObject(theExplorer);
                }

            }
        }

        adxOutlookAppEvents_ExplorerSelectionChange(object sender, object explorer)
        {
            DebugWriteLine("The ExplorerSelectionChange event has occurred.");
            try
            {
                Outlook.Explorer theExplorer = explorer as Outlook.Explorer;
                if (theExplorer != null)
                {
                    Outlook.Selection selection = null;
                    try
                    {
                        selection = theExplorer.Selection;

                        if (selection != null)
                        {
                            DebugWriteLine("Trying ConnectToSelectedItem.");
                            ConnectToSelectedItem(selection);
                            if (selection != null) Marshal.ReleaseComObject(selection);
                        }
                    }
                    catch {
                        DebugWriteLine("EEEEE");
                    }
                }
            }
            catch
            {
                DebugWriteLine("COM Object Already Released ");
            }

        }

        private void AddinModule_AddinStartupComplete(object sender, EventArgs e)
        {
            DebugWriteLine("The AddinStartupComplete event has occurred.");
            DebugWriteLine("The add-in has been loaded in Outlook " + this.HostMajorVersion.ToString());

            // This creates an instance of the class that handles the events of an Outlook item
            replyAllChecker = new OutlookItemEventsClass1(this);
        }



However, when I put breakpoint in ProcessRead : I found that
When I navigate to a email (Reading Pane on and Right) the ProcessRead gets called. now when I go to some other email and come back to the same email the ProcessRead does not get called. Any clue whats going on.

I thought the ProcessRead would get called every time the user navigates to an email. Please clarify when all is this expected to get called.
Posted 24 Apr, 2020 03:38:15 Top
Andrei Smolin


Add-in Express team


Posts: 17375
Joined: 2006-05-11
Hello Jatin,

First off, all events you receive are generated by Office, not by Add-in Express.

TheNewCOMAddin Dev writes:
// If its anything other that Mail. We don't support at this point.
if (selection[1] is Outlook.MailItem)
{
Outlook.MailItem item = (Outlook.MailItem)selection[1];

if (replyAllChecker.IsConnected)
{
replyAllChecker.RemoveConnection();
DebugWriteLine("Disconnected from the previously connected item.");
}
replyAllChecker.ConnectTo(item, true);
DebugWriteLine("Connected to this Outlook item.");
}
else
{
// If its anything other that Mail. We don't support at this point.
DebugWriteLine("Do not connect to this Outlook item.");
}


selection[1] creates a COM object that you need to release. You create it twice: one is passed to replyAllChecker.ConnectTo; the other is left unreleased. This may relate to the issue that you have.

also, make sure all other COM add-ins are off.

Regards from Belarus (GMT+3),

Andrei Smolin
Add-in Express Team Leader
Posted 24 Apr, 2020 03:49:07 Top