title: Setting DateTimePicker to Null and saving to DB
body: <p>I am having issues with my <code>DateTimePicker</code>. I have followed all examples for setting my <code>DateTimePicker</code> to be blank. The code looks like this:</p>
  
  <pre><code>dtpCloseDate.Checked = false;
  dtpCloseDate.ShowCheckBox = false;
  
  if (dtpCloseDate.Checked == false)
  {
      dtpCloseDate.CustomFormat = " ";
      dtpCloseDate.Format = DateTimePickerFormat.Custom;
  }
  </code></pre>
  
  <p>So this works great when loaded the <code>DateTimePicker</code> loads up with a blank in there. However, behind the scenes there is actually a date being loaded into this. So I then save to the DB and it has a date. Plus I am trying to validate that this close date is after the open date. I do have the validation, but it is always triggered currently because there is a date in the close date that is apparently before the open date.</p>