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| XML结构清晰,使用手机独立存储的时候可以利用上XML的文件结构来保存信息,这是一种不错的选择。 使用IsolatedStorageFile对象来实现手机信息的存储,有三个主要步骤,
 1、调用手机的独立存储
 IsolatedStorageFile storage = IsolatedStorageFile.GetUserStoreForApplication()
 2、创建独立存储文件流
 IsolatedStorageFileStream location = new IsolatedStorageFileStream(nameTxt.Text + ".item", System.IO.FileMode.Create, storage);
 3、读写该文件流
 写:
 //将本地存储文件流转化为可写流
 System.IO.StreamWriter file = new System.IO.StreamWriter(location);
 //将XML文件 保存到流file上 即已经写入到手机本地存储文件上
 _doc.Save(file);   //_doc是你创建的文件
 读:
 //转化为可读流
 System.IO.StreamReader file = new System.IO.StreamReader(location);
 //解析流 转化为XML
 _xml = XElement.Parse(file.ReadToEnd());
 下面是一个Demo购物清单
 
   清单列表
 MainPage.xaml
 
 
 
    View Code 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Net;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Documents;
 using System.Windows.Input;
 using System.Windows.Media;
 using System.Windows.Media.Animation;
 using System.Windows.Shapes;
 using Microsoft.Phone.Controls;
 using System.IO.IsolatedStorage;
 using System.Xml.Linq;
 namespace ShoppingList_Demo
 {
 public partial class MainPage : PhoneApplicationPage
 {
 public MainPage()
 {
 InitializeComponent();
 //加载页面触发Loaded事件
 Loaded += (object sender, RoutedEventArgs e) =>
 {
 Files.Items.Clear();//先清空一下ListBox的数据
 //获取应用程序的本地存储文件
 using (IsolatedStorageFile storage = IsolatedStorageFile.GetUserStoreForApplication())
 {
 //获取并循环 *.item的存储文件
 foreach (string filename in storage.GetFileNames("*.item"))
 {
 //动态构建一个Grid
 Grid a = new Grid();
 //定义第一列
 ColumnDefinition col = new ColumnDefinition();
 GridLength gl = new GridLength(200);
 col.Width = gl;
 a.ColumnDefinitions.Add(col);
 //定义第二列
 ColumnDefinition col2 = new ColumnDefinition();
 GridLength gl2 = new GridLength(200);
 col2.Width = gl;
 a.ColumnDefinitions.Add(col2);
 //添加一个TextBlock现实文件名 到第一列
 TextBlock txbx = new TextBlock();
 txbx.Text = filename;
 Grid.SetColumn(txbx, 0);
 //添加一个HyperlinkButton链接到购物详细清单页面 这是第二列
 HyperlinkButton btn = new HyperlinkButton();
 btn.Width = 200;
 btn.Content = "查看详细";
 btn.Name = filename;
 btn.NavigateUri = new Uri("/DisplayPage.xaml?item=" + filename, UriKind.Relative);//传递文件名到商品详细页面
 
 Grid.SetColumn(btn, 1);
 a.Children.Add(txbx);
 a.Children.Add(btn);
 Files.Items.Add(a);
 }
 }
 };
 }
 private void New_Click(object sender, EventArgs e)
 {
 NavigationService.Navigate(new Uri("/AddItem.xaml", UriKind.Relative));
 }
 }
 }
 
   AddItem.xaml
 
 
 View Code
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Net;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Documents;
 using System.Windows.Input;
 using System.Windows.Media;
 using System.Windows.Media.Animation;
 using System.Windows.Shapes;
 using Microsoft.Phone.Controls;
 using System.IO.IsolatedStorage;
 using System.Xml.Linq;
 namespace ShoppingList_Demo
 {
 public partial class AddItem : PhoneApplicationPage
 {
 public AddItem()
 {
 InitializeComponent();
 }
 private void BtnSave_Click(object sender, RoutedEventArgs e)
 {
 using (IsolatedStorageFile storage = IsolatedStorageFile.GetUserStoreForApplication())
 {
 XDocument _doc = new XDocument();
 XElement _item = new XElement(nameTxt.Text);//创建一个XML元素
 XAttribute price = new XAttribute("price", priceTxt.Text);//创建一个XML属性
 XAttribute quantity = new XAttribute("quantity", quanTxt.Text);
 _item.Add(price, quantity);//将这两个属性添加到 XML元素上
 //用_item 新建一个XML的Linq文档
 _doc = new XDocument(new XDeclaration("1.0", "utf-8", "yes"), _item);
 //创建一个本地存储的文件流
 IsolatedStorageFileStream location = new IsolatedStorageFileStream(nameTxt.Text + ".item",
 System.IO.FileMode.Create, storage);
 //将本地存储文件流转化为可写流
 System.IO.StreamWriter file = new System.IO.StreamWriter(location);
 //将XML文件 保存到流file上 即已经写入到手机本地存储文件上
 _doc.Save(file);
 file.Dispose();//关闭可写流
 location.Dispose();//关闭手机本地存储流
 //调回清单主页
 NavigationService.Navigate(new Uri("/MainPage.xaml", UriKind.Relative));
 }
 }
 }
 }
 
   查看商品详细
 DisplayPage.xaml
 
 
 View Code
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Net;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Documents;
 using System.Windows.Input;
 using System.Windows.Media;
 using System.Windows.Media.Animation;
 using System.Windows.Shapes;
 using Microsoft.Phone.Controls;
 using System.IO.IsolatedStorage;
 using System.Xml.Linq;
 using System.Windows.Navigation;
 namespace ShoppingList_Demo
 {
 public partial class DisplayPage : PhoneApplicationPage
 {
 public DisplayPage()
 {
 InitializeComponent();
 }
 protected override void OnNavigatedTo(NavigationEventArgs e)
 {
 String itemName = "";
 base.OnNavigatedTo(e);
 //获取上一页面传递过来的item值
 bool itemExists = NavigationContext.QueryString.TryGetValue("item", out itemName);
 if (itemExists)
 {
 PageTitle.Text = itemName;
 }
 using (IsolatedStorageFile storage = IsolatedStorageFile.GetUserStoreForApplication())
 {
 XElement _xml;//定义Linq的XML元素
 //打开本地存储文件
 IsolatedStorageFileStream location = new IsolatedStorageFileStream(itemName, System.IO.FileMode.Open, storage);
 //转化为可读流
 System.IO.StreamReader file = new System.IO.StreamReader(location);
 //解析流 转化为XML
 _xml = XElement.Parse(file.ReadToEnd());
 if (_xml.Name.LocalName != null)
 {
 XAttribute priceTemp = _xml.Attribute("price");//获取价格
 priceTxt.Text = priceTemp.Value.ToLower();
 XAttribute quanTemp = _xml.Attribute("quantity");//获取数量
 quanTxt.Text = quanTemp.Value.ToLower();
 nameTxt.Text = itemName;
 }
 file.Dispose();
 location.Dispose();
 }
 }
 private void BtnBack_Click(object sender, RoutedEventArgs e)
 {
 NavigationService.Navigate(new Uri("/MainPage.xaml", UriKind.Relative));
 }
 }
 }
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