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With OpcComputerAndServerDialog, your application can integrate a dialog box from which the user can select a computer and an OPC server residing on it.

This dialog is identical to OPC Computer and Server Dialog described in the OPC-DA Common Dialogs chapter.  The only difference is that before running the dialog, you need to make sure that its ServerFamilies property is set so that it includes (or only contains) the OpcAlarmsAndEvents enumeration member.