protected override async void OnNavigatedTo(NavigationEventArgs e)
        {
            goodsList.Clear();
            try
            {
                List<GoodsInfo> list = e.Parameter as List<GoodsInfo>;
                if (null != list)
                {
                    goodsList = list;
                }              
                Windows.Storage.StorageFolder storageFolder = ApplicationData.Current.LocalFolder;
                Windows.Storage.StorageFile shoppingCartStorageFile = await storageFolder.GetFileAsync("ShoppingCart.xml");                
                XmlDocument doc = await Windows.Data.Xml.Dom.XmlDocument.LoadFromFileAsync(shoppingCartStorageFile);
                IXmlNode root = null;
                foreach (var item in doc.ChildNodes)
                {
                    if (item.NodeName.Equals("goods"))
                    {
                        root = item;
                        break;
                    }
                }
                if (null != root)
                {
                    foreach (var goods in root.ChildNodes)
                    {
                        if (goods.NodeName.Equals("item"))
                        {
                            string imgUrl = goods.SelectSingleNode("img").InnerText;
                            string singlePrice = goods.SelectSingleNode("price").InnerText;
                            string name = goods.SelectSingleNode("productName").InnerText;
                            string count = goods.SelectSingleNode("count").InnerText;
                            string imagename = goods.SelectSingleNode("imageName").InnerText;
                            bool exist = false;
                            foreach (var item in goodsList)
                            {
                                if (item.name.Equals(name) && item.imgUri.Equals(imgUrl))
                                {
                                    item.count = item.count + Convert.ToInt32(count);
                                    exist = true;
                                    break;
                                }
                            }
                            if (!exist)
                            {
                                GoodsInfo info = new GoodsInfo();
                                StorageFile file = await StorageFile.GetFileFromPathAsync(imgUrl);
                                using (IRandomAccessStream fileStream = await file.OpenAsync(Windows.Storage.FileAccessMode.Read))
                                {
                                    BitmapImage image = new BitmapImage();
                                    image.SetSource(fileStream);
                                    info.img = image;
                                }
                                info.name = name;
                                info.price = singlePrice;
                                info.count = Convert.ToInt32(count);
                                info.imageName = imagename;
                                info.imgUri = imgUrl;
                                goodsList.Add(info);
                            }

                        }
                    }
                }
                int index = 0;
                foreach (var item in goodsList)
                {
                    ShopCartPanel panel = new ShopCartPanel();
                    panel.Picture = item.brush;
                    panel.GoodsName = item.name;
                    panel.PictureName = item.imageName;
                    panel.GoodsCount = item.count;
                    panel.Price = item.price;
                    panel.Name = item.imgUri + item.name;
                    panel.PictureURL = item.imgUri;
                    CheckBox check = new CheckBox();
                    if(null != checkboxStyle)
                    {
                        check.SetValue(StyleProperty,checkboxStyle);
                    }
                    check.Checked += CheckBox_Checked;
                    check.Unchecked += CheckBox_Unchecked;
                    panel.Check = check;
                    Button btnAdd = new Button();
                    btnAdd.Click += Add_Click;
                    Button btnDecrease = new Button();
                    btnDecrease.Click += Decrease_Click;
                    panel.ButtonAdd = btnAdd;
                    panel.ButtonDecrease = btnDecrease;
                    panel.PictureWith = PicWidth;
                    if(index > 0 && goodsPanels.ContainsKey(index - 1))
                    {
                        panel.SetValue(RelativePanel.RightOfProperty, goodsPanels[index - 1].Name);                        
                    }
                    else
                    {
                        panel.SetValue(RelativePanel.AlignLeftWithPanelProperty, true);
                    }
                    panel.SetValue(RelativePanel.AlignTopWithPanelProperty, true);
                    goods.Children.Add(panel);
                    goodsPanels.Add(index++,panel);
                }
                ResetPicturePanelPositon();
            }
            catch(Exception ex)
            {
#if DEBUG
                System.Diagnostics.Debug.WriteLine(ex.Message);
#endif
            }            
        }