title: How to delete multiple checked items from CheckedListBox
body: <p>I know how to remove a single <code>checkedItem</code> from <code>checkedlistbox</code>. But now, I want to remove  all the checked items in one go.</p>
  
  <p>I tried this:</p>
  
  <pre><code>foreach (var item in List_Frente.CheckedItems)
              {
                  List_Frente.Items.Remove(item);
              }
  </code></pre>
  
  <p>But as you probably know, it gives me an error,saying that, <code>List that this enumerator is bound to has been modified. An enumerator can only be used if the list does not change.</code> How may I remove all <code>checkeditems</code> with a single click ?</p>