title: Binding empty dictionary to a listbox
body: <p>When i try to bind a dictionary to a listbox I get an ArgumentException. Cannot bind to the new value member. </p>
  
  <p>I use the following code. 
  Can any one tell me what is wrong. Because when i enter i row in the dictionary its working fine...</p>
  
  <pre><code>this.contactpersonenListBox = new Dictionary&lt;int, string&gt;();
  
  lsContactpersonen.DataSource = new BindingSource(this.contactpersonenListBox, null);
  lsContactpersonen.DisplayMember = "Value";
  lsContactpersonen.ValueMember = "Key";
  </code></pre>