title: How to stop DateTimePicker from showing Todays Date
body: <p>Everytime when I start my program DateTimePicker automatically shows todays date and time. How can I stop this ? How can I make it blank ? </p>
  
  <p>I have a DOB DateTimePicker. For some users I don't know their DOB so I would like the DateTimePicker to show null or empty field.  </p>