Hi, I've got a situation where I need to communicate a change of state between 2 processes (or rather between what I presume are 2 AppDomains in one process) where I have no real control.
Basically, I have an Outlook addin that adds a button to Outlook, and from there they can switch the addin from server to local mode. The exact same assemblies are also called via COM to create the usercontrols that are inserted into HTML in the Outlook folders, but experience has shown that they are in different AppDomains, or at least have different copies of my assemblies as evidenced by the start-up code executing twice - once on start of the Addin, and once when the first COM control is loaded, so I can't just set a flag in the application. But I have no control over the AppDomains that either are loaded into - that's all controlled by Outlook and the Visual Studio Tools for Office. Something I have tried but it failed is remoting - it seems that I can't remote to the same target from within the same process twice, even if from different AppDomains. Did not investigate greatly, however the exact same piece of code would work for the Addin, but then fail for the COM controls. Tried some different options of TcpListeners etc, to no avail. The remoting would work for the COM controls from within a Windows Application however where the Addin was not present. Only thing I can think of is possibly windows messaging, but unless one of my COM controls is displayed, I might not have a window in the COM controls AppDomain to receive a message - in fact it might not yet be loaded by Outlook at all. Ideally it needs to be an instant message, so adding a flag to registry is not really appropriate because I'd rather not poll something like that if avoidable. Any other suggestions on how I might deal with this? TIA Dino =================================== This list is hosted by DevelopMentor® http://www.develop.com View archives and manage your subscription(s) at http://discuss.develop.com
