WP7的IsolatedStorage类初步认识..

WP7的文件系统感觉很特殊，至少在7.0版本是这样的，不知道以后会不会有改进。

系统会分配应用一个独立的空间，该应用无法访问除自己空间外的空间。

想做一个文件管理系统也没办法...

主要用到:

IsolatedStorageFile
IsolatedStorageFileStream
StreamWriter
StreamReader

   

Mainpage.xaml代码：

View Code

 1   
 2 <phone:PhoneApplicationPage 
 3     x:Class="WindowsPhoneApplication1.MainPage"
 4     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 5     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 6     xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
 7     xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"
 8     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
 9     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
10     mc:Ignorable="d" d:DesignWidth="480" d:DesignHeight="696"
11     FontFamily="{StaticResource PhoneFontFamilyNormal}"
12     FontSize="{StaticResource PhoneFontSizeNormal}"
13     Foreground="{StaticResource PhoneForegroundBrush}"
14     SupportedOrientations="Portrait" Orientation="Portrait"
15     shell:SystemTray.IsVisible="True">
16 
17     <!--LayoutRoot is the root grid where all page content is placed-->
18     <Grid x:Name="LayoutRoot" Background="Transparent">
19         <Grid.RowDefinitions>
20             <RowDefinition Height="Auto"/>
21             <RowDefinition Height="*"/>
22         </Grid.RowDefinitions>
23 
24         <!--TitlePanel contains the name of the application and page title-->
25         <StackPanel x:Name="TitlePanel" Grid.Row="0" Margin="12,17,0,28">
26             <TextBlock x:Name="ApplicationTitle" Text="MY APPLICATION" Style="{StaticResource PhoneTextNormalStyle}"/>
27             <TextBlock x:Name="PageTitle" Text="IsolatedStorage" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/>
28         </StackPanel>
29 
30         <!--ContentPanel - place additional content here-->
31         <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0"></Grid>
32     </Grid>
33  
34     <!--Sample code showing usage of ApplicationBar-->
35     <phone:PhoneApplicationPage.ApplicationBar>
36         <shell:ApplicationBar IsVisible="True" IsMenuEnabled="True">
37             <shell:ApplicationBarIconButton IconUri="/icon/appbar.next.rest.png" Text="查看文件" x:Name="GoFileListPageButton" Click="GoFileListPageButton_Click"/>
38             <shell:ApplicationBar.MenuItems>
39                 <shell:ApplicationBarMenuItem Text="新建一个文件" Click="AddTextButton_Click"/>
40                 <shell:ApplicationBarMenuItem Text="新建一个文件夹" Click="ApplicationBarMenuItem_Click"/>
41             </shell:ApplicationBar.MenuItems>
42         </shell:ApplicationBar>
43     </phone:PhoneApplicationPage.ApplicationBar>
44 
45 </phone:PhoneApplicationPage>

Mainpage.xaml.cs代码:

View Code

 1   
 2 using System;
 3 using System.Collections.Generic;
 4 using System.Linq;
 5 using System.Net;
 6 using System.Windows;
 7 using System.Windows.Controls;
 8 using System.Windows.Documents;
 9 using System.Windows.Input;
10 using System.Windows.Media;
11 using System.Windows.Media.Animation;
12 using System.Windows.Shapes;
13 using Microsoft.Phone.Controls;
14 using System.IO;
15 using System.IO.IsolatedStorage;
16 namespace WindowsPhoneApplication1
17 {
18     public partial class MainPage : PhoneApplicationPage
19     {
20         IsolatedStorageFile _Iso;
21         // Constructor
22         public MainPage()
23         {
24             InitializeComponent();
25             _Iso = IsolatedStorageFile.GetUserStoreForApplication();
26         }
27 
28 
29         private void AddTextButton_Click(object sender, EventArgs e)
30         {
31             string DateStr = DateTime.Now.Year.ToString() + "-" + DateTime.Now.Month.ToString() + "-" + DateTime.Now.Day.ToString() + "[" + DateTime.Now.Hour.ToString() + DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString() + "]";
32             IsolatedStorageFileStream isoStream = new IsolatedStorageFileStream(string
33                 .Format("{0}.txt", DateStr), FileMode.Create, FileAccess.Write, _Iso);
34             StreamWriter Writer = new StreamWriter(isoStream);
35             Writer.WriteLine(DateStr);
36             Writer.Close();
37         }
38 
39         private void GoFileListPageButton_Click(object sender, EventArgs e)
40         {
41             this.NavigationService.Navigate(new Uri("/FileList.xaml", UriKind.Relative));
42         }
43 
44         private void ApplicationBarMenuItem_Click(object sender, EventArgs e)
45         {
46             this.NavigationService.Navigate(new Uri("/Addfolder.xaml", UriKind.Relative));
47         }
48     }
49 }

AddFolder.Xaml

View Code

 1 <phone:PhoneApplicationPage 
 2     x:Class="WindowsPhoneApplication1.Addfolder"
 3     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 4     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 5     xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
 6     xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"
 7     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
 8     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
 9     FontFamily="{StaticResource PhoneFontFamilyNormal}"
10     FontSize="{StaticResource PhoneFontSizeNormal}"
11     Foreground="{StaticResource PhoneForegroundBrush}"
12     SupportedOrientations="Portrait" Orientation="Portrait"
13     mc:Ignorable="d" d:DesignHeight="768" d:DesignWidth="480"
14     shell:SystemTray.IsVisible="True">
15 
16     <!--LayoutRoot is the root grid where all page content is placed-->
17     <Grid x:Name="LayoutRoot" Background="Transparent">
18         <Grid.RowDefinitions>
19             <RowDefinition Height="Auto"/>
20             <RowDefinition Height="*"/>
21         </Grid.RowDefinitions>
22 
23         <!--TitlePanel contains the name of the application and page title-->
24         <StackPanel x:Name="TitlePanel" Grid.Row="0" Margin="12,17,0,28">
25             <TextBlock x:Name="ApplicationTitle" Text="MY APPLICATION" Style="{StaticResource PhoneTextNormalStyle}"/>
26             <TextBlock x:Name="PageTitle" Text="新建文件夹" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/>
27         </StackPanel>
28         <Button Content="保存" Grid.Row="1" Height="72" Margin="308,322,12,0" Name="button_Save" VerticalAlignment="Top" Click="button_Save_Click" />
29         <TextBox Grid.Row="1" Height="72" Margin="8,244,12,0" Name="textBox_Str" Text="" VerticalAlignment="Top" />
30         <!--ContentPanel - place additional content here-->
31     </Grid>
32  
33     <!--Sample code showing usage of ApplicationBar-->
34     <!--<phone:PhoneApplicationPage.ApplicationBar>
35         <shell:ApplicationBar IsVisible="True" IsMenuEnabled="True">
36             <shell:ApplicationBarIconButton IconUri="/Images/appbar_button1.png" Text="Button 1"/>
37             <shell:ApplicationBarIconButton IconUri="/Images/appbar_button2.png" Text="Button 2"/>
38             <shell:ApplicationBar.MenuItems>
39                 <shell:ApplicationBarMenuItem Text="MenuItem 1"/>
40                 <shell:ApplicationBarMenuItem Text="MenuItem 2"/>
41             </shell:ApplicationBar.MenuItems>
42         </shell:ApplicationBar>
43     </phone:PhoneApplicationPage.ApplicationBar>-->
44 
45 </phone:PhoneApplicationPage>
46 
47 
48   

AddFolder.Xaml.cs

View Code

 1   
 2 
 3 using System;
 4 using System.Collections.Generic;
 5 using System.Linq;
 6 using System.Net;
 7 using System.Windows;
 8 using System.Windows.Controls;
 9 using System.Windows.Documents;
10 using System.Windows.Input;
11 using System.Windows.Media;
12 using System.Windows.Media.Animation;
13 using System.Windows.Shapes;
14 using Microsoft.Phone.Controls;
15 using System.IO;
16 using System.IO.IsolatedStorage;
17 namespace WindowsPhoneApplication1
18 {
19     public partial class Addfolder : PhoneApplicationPage
20     {
21         IsolatedStorageFile _ISO;
22         public Addfolder()
23         {
24             InitializeComponent();
25             _ISO = IsolatedStorageFile.GetUserStoreForApplication();
26         }
27 
28         private void button_Save_Click(object sender, RoutedEventArgs e)
29         {
30             if (this.textBox_Str.Text.Trim().Equals(""))
31             {
32                 MessageBox.Show("未输入名称", "错误提示", MessageBoxButton.OK);
33             }
34             else {
35                 _ISO.CreateDirectory(this.textBox_Str.Text.Trim());
36                 this.textBox_Str.Text = "";
37                 MessageBox.Show("建立文件夹成功", "提示", MessageBoxButton.OK);
38             }
39         }
40     }
41 }

FileList.Xaml

View Code

 1  
 2 <phone:PhoneApplicationPage 
 3     x:Class="WindowsPhoneApplication1.FileList"
 4     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 5     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 6     xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
 7     xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"
 8     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
 9     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
10     FontFamily="{StaticResource PhoneFontFamilyNormal}"
11     FontSize="{StaticResource PhoneFontSizeNormal}"
12     Foreground="{StaticResource PhoneForegroundBrush}"
13     SupportedOrientations="Portrait" Orientation="Portrait"
14     mc:Ignorable="d" d:DesignHeight="768" d:DesignWidth="480"
15     shell:SystemTray.IsVisible="True"
16     Loaded="PhoneApplicationPage_Loaded"
17     >
18 
19     <!--LayoutRoot is the root grid where all page content is placed-->
20     <Grid x:Name="LayoutRoot" Background="Transparent">
21         <Grid.RowDefinitions>
22             <RowDefinition Height="Auto"/>
23             <RowDefinition Height="*"/>
24         </Grid.RowDefinitions>
25 
26         <!--TitlePanel contains the name of the application and page title-->
27         <StackPanel x:Name="TitlePanel" Grid.Row="0" Margin="12,17,0,28">
28             <TextBlock x:Name="ApplicationTitle" Text="MY APPLICATION" Style="{StaticResource PhoneTextNormalStyle}"/>
29             <TextBlock x:Name="PageTitle" Text="文件查看" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/>
30         </StackPanel>
31 
32         <!--ContentPanel - place additional content here-->
33         <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
34             <ListBox Margin="0,6,3,283" Name="listBox_FileList" SelectionChanged="listBox_FileList_SelectionChanged" />
35             <TextBlock HorizontalAlignment="Left" Margin="0,341,0,6" Name="textBlock_Str" Text="" Width="450" />
36         </Grid>
37     </Grid>
38  
39     <!--Sample code showing usage of ApplicationBar-->
40     <!--<phone:PhoneApplicationPage.ApplicationBar>
41         <shell:ApplicationBar IsVisible="True" IsMenuEnabled="True">
42             <shell:ApplicationBarIconButton IconUri="/Images/appbar_button1.png" Text="Button 1"/>
43             <shell:ApplicationBarIconButton IconUri="/Images/appbar_button2.png" Text="Button 2"/>
44             <shell:ApplicationBar.MenuItems>
45                 <shell:ApplicationBarMenuItem Text="MenuItem 1"/>
46                 <shell:ApplicationBarMenuItem Text="MenuItem 2"/>
47             </shell:ApplicationBar.MenuItems>
48         </shell:ApplicationBar>
49     </phone:PhoneApplicationPage.ApplicationBar>-->
50 
51 </phone:PhoneApplicationPage>
52 
53 
54  

FileList.Xaml.cs

View Code

 1  
 2 using System;
 3 using System.Collections.Generic;
 4 using System.Linq;
 5 using System.Net;
 6 using System.Windows;
 7 using System.Windows.Controls;
 8 using System.Windows.Documents;
 9 using System.Windows.Input;
10 using System.Windows.Media;
11 using System.Windows.Media.Animation;
12 using System.Windows.Shapes;
13 using Microsoft.Phone.Controls;
14 using System.IO;
15 using System.IO.IsolatedStorage;
16 namespace WindowsPhoneApplication1
17 {
18     public partial class FileList : PhoneApplicationPage
19     {
20         IsolatedStorageFile _ISO;
21         public FileList()
22         {
23             InitializeComponent();
24             _ISO = IsolatedStorageFile.GetUserStoreForApplication();
25         }
26 
27         private void PhoneApplicationPage_Loaded(object sender, RoutedEventArgs e)
28         {
29 
30             this.PageTitle.Text = string
31                 .Format("共[{0}]个对象", _ISO.GetFileNames().Length + _ISO.GetDirectoryNames().Length);
32 
33             foreach (string FileName in _ISO.GetDirectoryNames())
34             {
35                 ListBoxItem Item = new ListBoxItem();
36                 Item.Content = "[文件夹]" + FileName;
37                 Item.Tag = FileName;
38                 Item.Height = 40;
39 
40                 this.listBox_FileList.Items.Add(Item);
41             }
42             foreach (string FileName in _ISO.GetFileNames()) 
43             {
44                 ListBoxItem Item = new ListBoxItem();
45                 Item.Content = "[文件]" + FileName;
46                 Item.Tag = FileName;
47                 Item.Height = 40;
48          
49                 this.listBox_FileList.Items.Add(Item);
50             }
51         }
52 
53         private void listBox_FileList_SelectionChanged(object sender, SelectionChangedEventArgs e)
54         {
55             ListBoxItem Item = (ListBoxItem)this.listBox_FileList.Items[this.listBox_FileList.SelectedIndex];
56             if (!_ISO.DirectoryExists(Item.Tag.ToString()))
57             {
58                 IsolatedStorageFileStream Stream = new IsolatedStorageFileStream(Item.Tag.ToString(), FileMode.Open, FileAccess.Read, _ISO);
59 
60                 StreamReader Reader = new StreamReader(Stream);
61 
62                 this.textBlock_Str.Text = Reader.ReadToEnd();
63                 Reader.Close();
64             }
65             else {
66                 this.textBlock_Str.Text = "点击了一个文件夹";
67             }
68 
69 
70         }
71     }
72 }
73