Open outlook calendar from code behind

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Hi All,
Can anybody tell me how to open outlook calendar in asp.net web based application.

My concern is to access users outlook calendar using exchange server 2013 SDK/API. TO see users appointment and to add new appointment.

Example like: it is like Personal assistant staff can fix the appointment after seeing the boss schedule on calendar. ( i can go with desktop or web based C# application).

Please help in this ....

Thanks in advance.

Posted 18-Jul-13 1:50am

Member 4531085

Updated 23-Jul-13 18:57pm

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**Zoltán Zörgő** · Answer 1 · 2013-07-18T02:34:00

To be short: you can not open Outlook calendar from a web application, not from client side, and even less from server side. There were methods that could be used with ActiveX from Internet Explorer, but newer IE versions have closed those security holes. You should not try to solve this by client side means. It won't work.
But you can access the Exchange server (the one that is actually storing the calendar) via the Exchange Web Service from version 2007 on. Look here: http://msdn.microsoft.com/en-us/uc14trainingcourse_5l_topic2.aspx[^]
If you have Exchange version 2003, you still have some possibilities: http://stackoverflow.com/a/878299[^].

Update:
If you want to interact with user's calendar, but without the need to connect to the server, you can create iCalendar[^] the user could load. iCal is letting you to add, delete or modify calendar entries but with user's interaction.