title: ComboBox with checkbox as dropdown
body: <p>I am working in a winform application where I want to have a Combobox and it's dropdown should contain checkboxes like this:</p>
  
  <p><a href="https://i.stack.imgur.com/mF0Ic.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/mF0Ic.png" alt="enter image description here"></a></p>
  
  <p>These checkboxes are search conditions and I must be able to handle the check/Uncheck event of the checkboxes (at onetime i must be able to check/uncheck multiple checkboxes).</p>
  
  <p>Any help or way to do !!!</p>