title: DXGrid binding not showing cell value
body: <p>I am updating my project to use the DevExpress DXGrid.
  note: I am using he MVVM light toolkit.</p>
  
  <p>I was successfully binding to the default wpf grid, but now i want to ramp it up to use DXgrid.
  I "think" i am binding correctly, but when the grid displays the cells are all empty. the row number is correct (i.e. i have 3 cars, i get 3 rows) so it is definitely seeing my data, but i am sure i am missing a property somewhere becaus enone of the text displays all the cells are empty</p>
  
  <p></p>
  
  <pre><code>        &lt;dxg:GridControl.Columns&gt;
  
              &lt;dxg:GridColumn FieldName="{Binding Path=Id}" Header="ID"/&gt;
              &lt;dxg:GridColumn FieldName="{Binding Path=NominationDate, StringFormat=\{0:dd/MM/yyyy\}}" Header="Nomination Date" /&gt;
              &lt;dxg:GridColumn FieldName="{Binding Path=CarNumber}" Header="CarNumber"/&gt;
              &lt;dxg:GridColumn FieldName="{Binding Path=CarName}" Header="Car Name" /&gt;
              &lt;dxg:GridColumn FieldName="{Binding Path=Colour}" Header="Colour"/&gt;
  
  
          &lt;/dxg:GridControl.Columns&gt;
  
          &lt;dxg:GridControl.View&gt;
              &lt;dxg:TableView Name="tableView1" SelectedRowsSource="{Binding Selection}" MultiSelectMode="Row" NavigationStyle="Row"  /&gt;
  
  
          &lt;/dxg:GridControl.View&gt;
      &lt;/dxg:GridControl&gt;
  </code></pre>