在Windows Store Apps中从一个页面添加数据项到另一个页面

我正在使用WindowsStore GridApp模板在VS2012 c#/xaml中创建windows store应用程序。我使用的是这个模板的组和项页面。

在组页面中，我正在显示房间列表-这是RoomObjects的数据源

 public class RoomsObject : LivingDataCommon
{
    public RoomsObject()
        : base(String.Empty, String.Empty)
    {
    }

    public RoomsObject(String ID, String title)
        : base(ID, title)
    { }
    //adds Actors to collection of a Room, will be used for Rooms pages
    private ObservableCollection<ActorsObject> _actors = new ObservableCollection<ActorsObject>();
    public ObservableCollection<ActorsObject> Actors
    {
        get { return this._actors; }
    }


}

在项目页面中，我显示了每个房间的演员列表-数据源是actor对象

public class ActorsObject : LivingDataCommon
{
       public ActorsObject()
        : base(String.Empty, String.Empty)
    {
    }
    public ActorsObject(String ID, String title, Boolean homepage,String function, RoomsObject room, double currentValue, ActorsType type, AllActors allactors)
        : base(ID, title)
    {
        this._function = function;
        this._room = room;
        this._currentValue = currentValue;
        this._type = type;
        this._homepage = homepage;
        this._all = allactors;
    }
    //set home page appearance
    private Boolean _homepage = false;
    public static Boolean Homepage = false;


    //sets value of an actor
    private double _currentValue;
    public double CurrentValue
    {
        get { return this._currentValue; }
        set { this.SetProperty(ref this._currentValue, value); }
    }
    //sets and gets function code
    private string _function = string.Empty;
    public string Function
    {
        get { return this._function; }
        set { this.SetProperty(ref this._function, value); }
    }
    //gets room properity
    private RoomsObject _room;
    public RoomsObject Room
    {
        get { return this._room; }
        set { this.SetProperty(ref this._room, value); }
    }
    private ActorsType _type;
    public ActorsType Type
    {
        get { return this._type; }
        set { this.SetProperty(ref this._type, value); }
    }
    private AllActors _all;
    public AllActors All
    {
        get { return this._all; }
        set { this.SetProperty(ref this._all, value); }
    }
}

当我选择一个演员在项目页面我的appbar出现，我需要在我的pinButton上允许该演员显示在家里。

我假设我应该创建一个空的ObservableCollection并向其添加选定的项目，然后使用该集合作为Home的数据源。xaml，但我是c#的新手，我不能让它工作…

请给出任何建议，代码，或一些不同的方法来做到这一点?