Left/Right arrow keys switch between the different parts of the DateTime format (year, month, day, hour and so on)
Up/Down arrow keys change the currently selected part value incrementally or enable switching between AM/PM
Mouse Wheel changes the currently selected part value incrementally or enables switching between AM/PM
The Telerik RadDateTimePicker for WinForms is shipped with a rich set of themes that allow you to easily build slick interfaces with the look-and-feel of Windows 8, Office 2010, Office 2013, Metro, etc. The themes can be easily switched using a single property.
In addition to the built-in themes, you can build a new theme from scratch to fit your exact visual demands by using the Visual Style Builder productivity tool.