Model Binding with Visual Studio 11 Beta

I have a WinForm application that is created in Visual Studio 11 Developer Preview. It used Model Binding to bind data to a GridView. I upgraded my environment to  Visual Studio 11 Beta and my application  no longer works. Does anyone know of any changes to the way this is done.

This is the error: "'Item' is not declared. It may be inaccessible due to its protection level." I could find "Items" but not "Item"

Thank you


    <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
        DataKeyNames="organizationId,organizationGuid"
        ModelType="Organization"  
        SelectMethod="BindGrid" MultipleActiveResultSets="True"
        EmptyDataText="There are no data records to display.">
        <Columns>
            <asp:TemplateField HeaderText="organizationGuid" SortExpression="organizationGuid" Visible="False">
                <ItemTemplate>
                    <asp:Label ID="organizationGuidLabel1" runat="server" Text='<%# Item.organizationGuid%>' />
                </ItemTemplate>
            </asp:TemplateField>
        </Columns>
    </asp:GridView>