By default, the DateTimePicker value is
null and the date-time selector popup is hidden.
The DateTimePicker provides options for:
To set the initial value that is rendered by the DateTimePicker, set the
defaultValue property. This approach allows the component to display a value upon its initial render while remaining in an uncontrolled state.
To display a popup for the date-time selector when the DateTimePicker initially renders, set the
defaultShow property to
true. This approach allows the component to show an open popup for the date-time selector while remaining in an uncontrolled state.