Problem with Virtualization in wpf

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C#

WPF

I am trying to bind dataview to itemssource dependency property of datagrid.

<DataGrid AutoGenerateColumns="True" Grid.Row="1" Name="dataGrid1" VirtualizingStackPanel.VirtualizationMode="Recycling" EnableColumnVirtualization="True" EnableRowVirtualization="True" VirtualizingStackPanel.IsVirtualizing="True"  ItemsSource="{Binding Path=Data}" VerticalScrollBarVisibility="Visible"  HorizontalScrollBarVisibility="Visible"/>

The clr property which i am binding is

public DataView Data
     {
         get
         {
             return data;
         }
         set
         {
             data = value;
             OnPropertyChange("Data");
         }
     }

but i cannot achieve the virtualization using this.I dont know what is the problem