Multi ItemsSource (wpf)
===

    MySqlCommand cmd = new MySqlCommand(query, conn);
    dt.Load(cmd.ExecuteReader());
    List<string> list = new List<string>();
      while (combodata.Read())
      {
         list.Add(combodata.GetString(0));
      }
    source.DataSource = dt;
     
    dataGrid1.ItemsSource = source;
how add `list` to `source`?

    source.DataSource = dt;
    source.DataSource = list;
wrong...

i need add `dataGrid1.ItemsSource` a `dt` and `list`
how i can?