Calendar like app

WPF calendar like app. The user should be able to add jobs witch will be stored in a data base/ xml files on one side, and retrieve the jobs and view them in a list like control. I provide the design witch I would like the app to have. The app should run on a server computer and to be used by users in the same network(office).All the users on the network should be able to add jobs in the database(calendar). Language to be used is C#. Details are to be discussed.