Startup event gets fired when when the first app launches Outlook. When user
double clicks on the Outlook icon on the desktop, the already running
instance of Outlook simply displays a new Explorer.
I suspect the reason why your code does not work is because you always
assume on startup that there is at least one explorer visible where you can
add your buttons (which is not the case obviously)and you do not trap the
Application.Explorers.NewExplorer event.

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

"Sanjay" wrote in message
oups.com...
Hello guys..
I have an issue with one of the apps that connects to Outlook to
retrieve calendar information. It is a windows app that displays
calendar and recent mail items. Here is the sample code

using Microsoft.Office.Interop.Outlook;
public class OutlookSource
{
private Application outlookApp;
private NameSpace outlookNS;
public void OutlookSource
{
outlookApp = new Application();
outlookNS = outlookApp.GetNamespace("MAPI");
//do some work here
}
}


What above code does is that it launches outlook in the background.
When users actually launch outlook, the ThisApplication_Startup event
does not get fired. None of the plugins get activated.

Is there a workaround for this?

Sanjay