（转）Windows Phone7隔离存储空间

原文地址：http://www.cnblogs.com/xieLongBao/archive/2012/02/28/2372311.html

Windows Phone7隔离存储空间

隔离存储空间：

• 目录操作
• 文件操作
• 应用程序配置信息

隔离存储空间的概念：所有文件IO操作被限制在隔离存储空间里面，在隔离存储空间里面可以增删改目录和文件，在隔离存储空间里面可以存储程序配置信息

重要的类：

• IsolatedStorageFile用于操控隔离存储空间里面的目录及文件，
• IsolatedStorageFileStream用于读写操控隔离存储空间里面的流
• IsolatedStorageFileSettings用于存储程序配置信息的Dictionary

配额管理：

• windows phone下的隔离存储空间没有配额的限制

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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.IO;

namespace IsolatedStorage

{

    public partial class MainPage : PhoneApplicationPage

    {

        // Constructor

        public MainPage()

        {

            InitializeComponent();

        }

        private const string foldername = "temp1";

        private const string filename = foldername + "/address.txt";

        private const string settingname = "sname";

        /// <summary>

        /// 创建文件夹

        /// </summary>

        /// <param name="sender"></param>

        /// <param name="e"></param>

        private void button1_Click(object sender, RoutedEventArgs e)

        {

            using (IsolatedStorageFile file = IsolatedStorageFile.GetUserStoreForApplication())

            {

                file.CreateDirectory(foldername);

            }

        }

        /// <summary>

        /// 检查文件夹是否存在

        /// </summary>

        /// <param name="sender"></param>

        /// <param name="e"></param>

        private void button2_Click(object sender, RoutedEventArgs e)

        {

            using (IsolatedStorageFile file = IsolatedStorageFile.GetUserStoreForApplication())

            {

                if (file.DirectoryExists(foldername))

                {

                    MessageBox.Show("已存在");

                }

                else

                {

                    MessageBox.Show("不存在");

                }

            }

        }

        /// <summary>

        /// 删除目录

        /// </summary>

        /// <param name="sender"></param>

        /// <param name="e"></param>

        private void button3_Click(object sender, RoutedEventArgs e)

        {

            using (IsolatedStorageFile file = IsolatedStorageFile.GetUserStoreForApplication())

            {

                file.DeleteDirectory(foldername);

            }

        }

        /// <summary>

        /// 创建文件

        /// </summary>

        /// <param name="sender"></param>

        /// <param name="e"></param>

        private void button4_Click(object sender, RoutedEventArgs e)

        {

            using (IsolatedStorageFile file = IsolatedStorageFile.GetUserStoreForApplication())

            {

                IsolatedStorageFileStream stream = file.CreateFile(filename);

                stream.Close();

            }

        }

        /// <summary>

        /// 检查文件是否存在

        /// </summary>

        /// <param name="sender"></param>

        /// <param name="e"></param>

        private void button5_Click(object sender, RoutedEventArgs e)

        {

            using (IsolatedStorageFile file = IsolatedStorageFile.GetUserStoreForApplication())

            {

                if (file.FileExists(filename))

                {

                    MessageBox.Show("已存在" + filename);

                }

                else

                {

                    MessageBox.Show("不存在");

                }

            }

        }

        /// <summary>

        /// 删除文件

        /// </summary>

        /// <param name="sender"></param>

        /// <param name="e"></param>

        private void button6_Click(object sender, RoutedEventArgs e)

        {

            using (IsolatedStorageFile file = IsolatedStorageFile.GetUserStoreForApplication())

            {

                file.DeleteFile(filename);

            }

        }

        /// <summary>

        /// 向文件里增加内容

        /// </summary>

        /// <param name="sender"></param>

        /// <param name="e"></param>

        private void button7_Click(object sender, RoutedEventArgs e)

        {

            using (IsolatedStorageFile file = IsolatedStorageFile.GetUserStoreForApplication())

            {

                using (IsolatedStorageFileStream stream = file.OpenFile(filename, FileMode.OpenOrCreate, FileAccess.ReadWrite))

                {

                    StreamWriter writer = new StreamWriter(stream);

                    writer.WriteLine(textBox1.Text);

                    writer.Close();

                    textBox1.Text = "";

                }

              

            }

        }

        /// <summary>

        /// 读取文件内容

        /// </summary>

        /// <param name="sender"></param>

        /// <param name="e"></param>

        private void button8_Click(object sender, RoutedEventArgs e)

        {

            using (IsolatedStorageFile file = IsolatedStorageFile.GetUserStoreForApplication())

            {

                using (IsolatedStorageFileStream stream = file.OpenFile(filename, FileMode.OpenOrCreate, FileAccess.ReadWrite))

                {

                  using (StreamReader  reader=new StreamReader (stream))

                  {

                      textBox1.Text = reader.ReadToEnd();

                  }

                }

            }

        }

        /// <summary>

        /// 程序配置信息保存

        /// </summary>

        /// <param name="sender"></param>

        /// <param name="e"></param>

        private void button9_Click(object sender, RoutedEventArgs e)

        {

            IsolatedStorageSettings.ApplicationSettings[settingname] = textBox2.Text;

            IsolatedStorageSettings.ApplicationSettings.Save();

            textBox2.Text = "";

        }

        /// <summary>

        /// 程序配置信息读取

        /// </summary>

        /// <param name="sender"></param>

        /// <param name="e"></param>

        private void button10_Click(object sender, RoutedEventArgs e)

        {

            if (IsolatedStorageSettings.ApplicationSettings.Contains(settingname))

            {

                textBox2.Text = IsolatedStorageSettings.ApplicationSettings[settingname].ToString();

            }

        }

    }

}