title: Make Datetimepicker display unchanged value till picking a date in the dropdown calendar C#
body: <p>When using a default winform DateTimePicker, if you click on dropdown, then you can scroll(or page) the calendar by mouse or arrow keys and the displayed date/time value is changed accordingly. Is there a way to keep the displayed value not impacted ,i.e., seemingly null (as a space) if backend value is null or a fixed value from the backend database, until you truly pick a value from the calendar to override it? </p>
  
  <p>Sometimes customers want to view the DateTimePicker value constantly from backend as a reference while choosing a new value from the calendar. I am thinking of combining a textbox together with a datetimepicker to achieve this behavior but hasn't yet drawn solid conclusion.</p>