DisplayMode is a property of RadDatePicker and RadTimePicker that defines how to visualize the control. It can takes two values:
The Standard mode is the default representation of RadDatePicker and RadTimePicker.
The Inline mode is a feature that excludes the TextBlock part with the button and directly initializes the Date/Time Selector Popup part:
In Inline mode, selection is made after every change of the Date/Time value and there are no Submit and Cancel buttons.
Here in an example that demonstrates how to set the DisplayMode property:
<telerik:RadDatePicker DisplayMode="Inline" Width="300" Height="250">