title: Need to add items to list from checkedlistbox and remove some
body: <p>There's a checklist that contains strings . 
  There is a for each loop that checks the  checked items and then add those items to the list of strings that's called <em>mylist</em> only if they aren't added already. </p>
  
  <p>What i need is to check for the not checked items in the listbox  and remove the strings from <em>mylist</em> after unchecking item from box . </p>
  
  <p>Basicaly i have a list called <em>mylist</em> i need to add whatever checked item from checkedboxlist to <em>mylist</em> and whenever i uncheck an item delete the same string from <em>mylist</em> . </p>
  
  <p>Suggest some solutions. Thanks  in advance . </p>