Databinding List<Object> WindowsPhone

I would like to improve my productivity to use the correct design. So I add a folder SampleData and a file RestaurantsSampleData.xaml The structure of this file defines :

 xmlns:vm="clr-namespace:GeolocationTest.ViewModels">
<vm:MainViewModel.Pois>
    <vm:Poi Id="1" Adresse="20 rue de vinci, 33700 merignac" Name="MacDonald" />
    <vm:Poi Id="2" Adresse="20 rue de vinci, 33700 merignac" Name="MacDonald"/>
    <vm:Poi Id="3" Adresse="20 rue de vinci, 33700 merignac" Name="MacDonald"/>
    <vm:Poi Id="4" Adresse="20 rue de vinci, 33700 merignac" Name="MacDonald"/>
    <vm:Poi Id="5" Adresse="20 rue de vinci, 33700 merignac" Name="MacDonald"/>
    <vm:Poi Id="6" Adresse="20 rue de vinci, 33700 merignac" Name="MacDonald"/>
    <vm:Poi Id="7" Adresse="20 rue de vinci, 33700 merignac" Name="MacDonald"/>
    <vm:Poi Id="8" Adresse="20 rue de vinci, 33700 merignac" Name="MacDonald"/>
    <vm:Poi Id="9" Adresse="20 rue de vinci, 33700 merignac" Name="MacDonald"/>
    <vm:Poi Id="10" Adresse="20 rue de vinci, 33700 merignac" Name="MacDonald" />
</vm:MainViewModel.Pois>

And my class Pois is

   public class PoiDetail : PoiBase
{
    public String FormattedAddress { get; set; }        
    public String FormattedPhoneNumber { get; set; }
    public String Icon { get; set; }
    public List<Review> Reviews { get; set; }
    public double Latitude { get; set; }
    public double Longitude { get; set; }
}

I would like to add a list in my RestaurantsSampleData.xml to permit to display in the designer of visual studio. Currently I don't find any way to do it and I loose many time between build the application, check the design and modify it. It will more effective to use sample and after plug the real data.

Use blend to create your sample data if you have it with your copy of Visual Studio 2013