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I have attached a sample where the appointments are created dynamically, which I believe you can find useful. If you want to have the appointments in an XML, text or other type of file, you can read the content of the file and parse it somewhere inside the SampleAppointmentsSource constructor or inside the MainViewModel. Then you can add the parsed DateTime objects to the AllAppointments collection. Neither StartDate, nor EndDate have to be related to DateTime.Now. You can create whatever DateTime objects you need.
All the best,
the Telerik team
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