WP8数据存储--独立存储设置

 <Grid x:Name="LayoutRoot" Background="Transparent">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>

        <!--TitlePanel 包含应用程序的名称和页标题-->
        <StackPanel Grid.Row="0" Margin="12,17,0,28">
            <TextBlock Text="我的应用程序" Style="{StaticResource PhoneTextNormalStyle}"/>
            <TextBlock Text="页面名称" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/>
        </StackPanel>

        <!--ContentPanel - 在此处放置其他内容-->
        <Grid x:Name="ContentPanel" Grid.Row="1" Margin="24,10,0,-10">
            <TextBlock Margin="19,46,345,522" Style="{StaticResource PhoneTextTitle1Style}" FontSize="25" Text="Key"/>
            <TextBlock Margin="19,112,345,456" Style="{StaticResource PhoneTextTitle1Style}" FontSize="25" Text="Value"/>
            <TextBox x:Name="text_Key" HorizontalAlignment="Left" Height="58" Margin="116,38,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="260" FontSize="15"/>
            <TextBox x:Name="text_Value" HorizontalAlignment="Left" Height="58" Margin="116,101,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="260" FontSize="15"/>
            <Button x:Name="btn_Save" Content="保存" HorizontalAlignment="Left" Height="67" Margin="19,200,0,0" VerticalAlignment="Top" Width="122"/>
            <Button x:Name="btn_Delete" Content="删除" HorizontalAlignment="Left" Height="67" Margin="146,200,0,0" VerticalAlignment="Top" Width="122"/>
            <Button x:Name="deleteall" Content="清空所有" HorizontalAlignment="Left" Height="67" Margin="289,200,0,0" VerticalAlignment="Top" Width="144"/>
            <ListBox x:Name="lstKeys" Margin="31,267,35,69"/>
        </Grid>
    </Grid>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Navigation;
using Microsoft.Phone.Controls;
using Microsoft.Phone.Shell;
using System.IO.IsolatedStorage;

namespace PhoneApp1
{
    public partial class Panorama : PhoneApplicationPage
    {
        public IsolatedStorageSettings _Settings;
        public Panorama()
        {
         
            InitializeComponent();
            _Settings = IsolatedStorageSettings.ApplicationSettings;
            BindkeyList();
            btn_Save.Click += btn_Save_Click;
            btn_Delete.Click += btn_Delete_Click;
            deleteall.Click += deleteall_Click;
            lstKeys.SelectionChanged += lstKeys_SelectionChanged;
        }

        void lstKeys_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            if (e.AddedItems.Count > 0)
            {
                string key = e.AddedItems[0].ToString();
                if (_Settings.Contains(key))
                {
                    text_Key.Text = key;
                    text_Value.Text = _Settings[key].ToString();
                }
            }
        }

        void deleteall_Click(object sender, RoutedEventArgs e)
        {
            _Settings.Clear();
            _Settings.Save();
            BindkeyList();
        }

        void btn_Delete_Click(object sender, RoutedEventArgs e)
        {
            if(lstKeys.SelectedIndex>-1)
            _Settings.Remove(lstKeys.SelectedItem.ToString());
            _Settings.Save();
            BindkeyList();

        }

        private void BindkeyList()
        {
            lstKeys.Items.Clear();
            if (_Settings!=null)
            {
                foreach (string key in _Settings.Keys)
                {
                    lstKeys.Items.Add(key);
                }
                text_Key.Text = "";
                text_Value.Text = "";
            }
        }

        void btn_Save_Click(object sender, RoutedEventArgs e)
        {
            if (text_Key.Text != "")
            {
                if (_Settings.Contains(text_Key.Text))
                {
                    _Settings[text_Key.Text] = text_Value.Text;
                }
                else
                {
                    _Settings.Add(text_Key.Text, text_Value.Text);
                }
                _Settings.Save();
                BindkeyList();
            }
            else
            { MessageBox.Show("请添加key值"); }
        }

       
    }
}