title: Binding list<string> in columns of datagrid with caliburn.micro
body: <p>My class is this :  </p>
  
  <pre><code>public class Articolo : Screen
  {
          public string Code { get; set; }
          public string Description { get; set; }
          public decimal Cost{ get; set; }
          public decimal Price{ get; set; }
          public List&lt;Ean&gt; BarCode { get; set; }
  }
  </code></pre>
  
  <p>and this Ean Class:</p>
  
  <pre><code>public class Ean
  {
      public string Code{ get; set; }
  }
  </code></pre>
  
  <p>My datagrid is :</p>
  
  <pre><code>&lt;DataGrid Height="367" HorizontalAlignment="Stretch" Margin="14,52,12,0"
           VerticalAlignment="Top" AutoGenerateColumns="False" x:Name="List" &gt;
         &lt;DataGrid.Columns&gt;
              &lt;DataGridTextColumn Binding="{Binding Code}" Header="Codice" /&gt;
              &lt;DataGridTextColumn Binding="{Binding Description }" Header="Descrizione" /&gt;
              &lt;DataGridTextColumn Binding="{Binding Cost}" Header="Quantita" /&gt;
              &lt;DataGridTextColumn Binding="{Binding Price}" Header="Prezzo" /&gt;
              &lt;DataGridTextColumn Binding="{Binding BarCode}" Header="BarCodes" /&gt;
          &lt;/DataGrid.Columns&gt;
  &lt;/DataGrid&gt;
  </code></pre>
  
  <p>He is a part of ViewModel:</p>
  
  <pre><code>    [Export(typeof(IScreen))]
      public class BolleViewModel : Screen
      {
          public List&lt;Articolo&gt; List { get; private set; }
  
          public BViewModel()
          {
              Recover recover = new Recover();
              List = recover.Import();
              NotifyOfPropertyChange("List");
          }
      }
  </code></pre>
  
  <p>In the columns BarCodes is write (Collection)! And not the barcodes.
  Why? How can I view the list of barcodes in the column? thanks..</p>