title: Set SelectedItem on a combobox bound to datasource
body: <pre><code>List&lt;Customer&gt; _customers = getCustomers().ToList();
  BindingSource bsCustomers = new BindingSource();
  bsCustomers.DataSource = _customers;
  comboBox.DataSource = bsCustomers.DataSource;
  comboBox.DisplayMember = "name";
  comboBox.ValueMember = "id";
  </code></pre>
  
  <p>Now how do I set the combobox's Item to something other than the first in the list?
  Tried
  comboBox.SelectedItem = someCustomer;
  ...and lots of other stuff but no luck so far...</p>