PhoneApplicationService 不起作用呢
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 Microsoft.Phone.Shell;
using System.Windows.Navigation;
namespace 墓碑机制
{
public partial class MainPage : PhoneApplicationPage
{
// 构造函数
public MainPage()
{
InitializeComponent();
}
//当页面成为活动页面时调用
protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
//还原文本框1中的数据
if (PhoneApplicationService.Current.State.ContainsKey("文本框1"))
{
textBox1.Text = Convert.ToString(PhoneApplicationService.Current.State["文本框1"]);
}
}
//当页面不再是活动页面时调用，将数据保存到“墓碑”中
protected override void OnNavigatedFrom(NavigationEventArgs e)
{
base.OnNavigatedFrom(e);
PhoneApplicationService.Current.State["文本框1"] = textBox1.Text; //保存textbox1中的数据
}
}
}
