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I'm trying to use exchange web services impersonation to add appointments into calendars. I am using Exchange Web Service Manager API and it worked fine when I tested with one account. Since my application will have to do this operation with about 20 000 accounts I am wondering what is the most efficient way to do it? (if it's possible) Thanks in advance.

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1 Answers

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Only option you have is to call CreateAppointment in loop. Each iteration has to have the appropriate user impersonation before creating the appointment using Appointment class

Check this URL for more details: http://msdn.microsoft.com/en-us/library/dd633661%28v=exchg.80%29.aspx