title: Multi ItemsSource (wpf)
body: <pre><code>MySqlCommand cmd = new MySqlCommand(query, conn);
  dt.Load(cmd.ExecuteReader());
  List&lt;string&gt; list = new List&lt;string&gt;();
    while (combodata.Read())
    {
       list.Add(combodata.GetString(0));
    }
  source.DataSource = dt;
  
  dataGrid1.ItemsSource = source;
  </code></pre>
  
  <p>how add <code>list</code> to <code>source</code>?</p>
  
  <pre><code>source.DataSource = dt;
  source.DataSource = list;
  </code></pre>
  
  <p>wrong...</p>
  
  <p>i need add <code>dataGrid1.ItemsSource</code> a <code>dt</code> and <code>list</code>
  how i can?</p>