问题
I want to check mail read and unread property using C#. i.e want to check whether mail is read or not. (using Domino.dll)
回答1:
The unread marks table is not exposed through the "back-end classes" (which is what you are most likely using with Domino.dll). This is available thorugh the lower level C API - it's a bit more work to deal with, but if you are interested, look at the "NSFDbGetUnreadNoteTable", which takes a database handle and returns a handle to an "IDTable" (essentially, a document collection).
IBM Documentation
来源：https://stackoverflow.com/questions/1592940/how-to-check-mail-read-or-unread-property-lotus-notes-using-c-sharp