Thanks,

outlookExplorer is hold reference to Explorer

Outlook.ExplorerEvents_10_Event explorerEvents =
(Outlook.ExplorerEvents_10_Event)outlookExplorer ;

explorerEvents.Close += new
Outlook.ExplorerEvents_10_CloseEventHandler(OnExpl orerClose);
explorerEvents.FolderSwitch += new
Outlook.ExplorerEvents_10_FolderSwitchEventHandler (explorerEvents_FolderSwitch);
explorerEvents.SelectionChange += new
Outlook.ExplorerEvents_10_SelectionChangeEventHand ler(explorerEvents_SelectionChange);


thats All, tnx