title: ListBox multiple Selection get all selected values
body: <p>I'm having a problem since a while now an just can't find any solution that works for me. I have a <code>ListBox</code> which is filled up with a <code>DataTable</code> like</p>
  
  <pre><code>listbox.DataSource = table;  
  listbox.Displaymember = "Name";    
  listbox.ValueMember = "ID";
  </code></pre>
  
  <p>If I now select an item in my listbox I can get it out like:</p>
  
  <pre><code>listbox.SelectedValue.toString();
  </code></pre>
  
  <p>My Problem:</p>
  
  <p>What can I do if I would like to have ALL selected Values from a <code>ListBox</code> where multiple selection is enabled and save them all in an array or something like that?!</p>
  
  <p>I can't use <code>SelectedItems</code> cause that is not giving me the information I need.</p>