We provide an Examples for Kendo UI Complete for ASP.NET MVC, which you can find the installation folder of the widgets. In general the path will be "C:\ProgramFiles[x86]\Telerik\Kendo UI for ASP.NET MVC Q3 2012\Examples". There you can find an example, which shows how to define a list of DateTime objects and show them in the Calendar. Unfortunately, there is no example, which shows a way to change these dates and save them.
All the best,
the Telerik team
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