刚学windows phone开发，写了个记事本，有问题，求高手解答

nice_wp 2014-04-18 05:52:35

在page1页面保存文本，返回主页没有显示文本，已经用binding绑定了数据，但是就是不显示，请问怎么办，本人新手，真心搞不懂。望高手能抽空看下，谢谢。
这是主页面
<Grid x:Name="ContentPanel" Margin="0,124,10,0" Grid.RowSpan="2">
<ListBox Name="_LB_main" Margin="3.099,2.005,-4.229,437.534" RenderTransformOrigin="0.5,0.5"
UseLayoutRounding="False" d:LayoutRounding="Auto">
<ListBox.RenderTransform>
<CompositeTransform Rotation="0.232"/>
</ListBox.RenderTransform>
<ListBox.ItemTemplate >
<DataTemplate >
<Grid HorizontalAlignment="Left" Margin="12,192,0.0">
<Grid.RowDefinitions >
<RowDefinition Height="33"/>
<RowDefinition Height="67"/>
</Grid.RowDefinitions >
<HyperlinkButton Name="_hybtn_1" Content="{Binding titile_tbx1}" Height="80" Width="461" Click="_hybtn_1_Click"/>
<TextBlock Name="_tb1_1" TextWrapping="Wrap" Text="{Binding body_txb1}" Height="52" Width="461"/>
</Grid >
</DataTemplate >
</ListBox.ItemTemplate >
</ListBox >

这是page1页面
<Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
<TextBox Name="_tbx_title" HorizontalAlignment="Left" Height="72" TextWrapping="Wrap" Text="TextBox" VerticalAlignment="Top" Width="456" Margin="0,10,0,0"/>
<TextBox Name="_tbx_body" HorizontalAlignment="Left" Height="641" Margin="0,104,0,0" TextWrapping="Wrap" Text="TextBox" VerticalAlignment="Top" Width="456" TextChanged="_tbx_body_TextChanged"/>

</Grid>
</Grid>
<phone:PhoneApplicationPage.ApplicationBar>
<shell:ApplicationBar IsVisible="True" IsMenuEnabled="True">
<shell:ApplicationBarIconButton IconUri="appbar.save.rest.png" Text="保存" Click="ApplicationBarIconButton_Click_1"/>
<shell:ApplicationBarIconButton IconUri="appbar.cancel.rest.png" Text="删除" Click="ApplicationBarIconButton_Click_2"/>
<shell:ApplicationBar.MenuItems>
</shell:ApplicationBar.MenuItems>
</shell:ApplicationBar>
</phone:PhoneApplicationPage.ApplicationBar>

下面是主页面 mainpage.xaml代码



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;

using System.IO.IsolatedStorage;

using System.Data;

using System.Text;

using Microsoft.Phone.Shell;

using System.IO;

using System.IO.IsolatedStorage;



namespace text

{

    public partial class MainPage : PhoneApplicationPage

    {

        public string  filename;

        public string[] filename_list;

        public class note

        {

            public string titile_tbx1 { get; set; }

            public string body_txb1 { get; set; }

        }

        public MainPage()

        {

            InitializeComponent();

        }

        protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e)

        {

            base.OnNavigatedTo(e);

            List<note> notes = new List<note>();

            using (IsolatedStorageFile iso = IsolatedStorageFile.GetUserStoreForApplication())

            {

                filename_list = iso.GetFileNames(); //获得根目录的所有文件名称列表

                int i = filename_list.Length;  //获取文件名列表长度

                for (int a = 0; a < i; a++) //通过for循环 依次写入note 由a决定

                {

                    using (IsolatedStorageFile file=IsolatedStorageFile.GetUserStoreForApplication())

                    {

                        using (IsolatedStorageFileStream stream=file.OpenFile (filename_list[a],FileMode.OpenOrCreate ,FileAccess.ReadWrite ))

                        {

                            using (StreamReader reader = new StreamReader(stream))

                            {

                                notes.Add(new note { titile_tbx1 = filename_list[a], body_txb1 = reader.ReadToEnd() });

                            }

                        }

                    }

                }

             

            }

            _LB_main.ItemsSource = notes; //



        }



        private void _hybtn_1_Click(object sender, RoutedEventArgs e)

        {

            HyperlinkButton myhybtn = e.OriginalSource as HyperlinkButton;

            filename = myhybtn.Content.ToString();

            this.NavigationService.Navigate(new Uri ("edit.xaml?file="+filename,UriKind.Relative ));



        }

    }

}

以下是page1代码



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;

using System.IO;

using System.Text;



namespace text

{

    public partial class edit : PhoneApplicationPage

    {

        public string data;

        public edit()

        {

            InitializeComponent();

        }



        private void _tbx_body_TextChanged(object sender, TextChangedEventArgs e)

        {

            using (IsolatedStorageFile file = IsolatedStorageFile.GetUserStoreForApplication())

            {

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

                {

                    StreamWriter writer = new StreamWriter(stream);

                    writer.WriteLine(_tbx_body.Text);

                    writer.Close();

                }

            }

        }



        private void ApplicationBarIconButton_Click_1(object sender, EventArgs e)

        {

            using (IsolatedStorageFile file = IsolatedStorageFile.GetUserStoreForApplication())

            {

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

                {

                    StreamWriter writer = new StreamWriter(stream);

                    writer.WriteLine(_tbx_body.Text);

                    writer.Close();

                }

            }

            this.NavigationService.Navigate(new Uri("/Mainpage.xaml", UriKind.Relative));

        }

        protected override void OnNavigatedTo(NavigationEventArgs e)

        {

            base.OnNavigatedTo(e); //设置一个data string 如果出现异常，就跳出代码块，直接进入catch return

            try

            {

                data = NavigationContext.QueryString["file"];

            }

            catch (System.Exception ex)

            {

                return;

            }

            if (!string.IsNullOrEmpty(data))

            {

                using (IsolatedStorageFile file = IsolatedStorageFile.GetUserStoreForApplication())

                {

                    using (IsolatedStorageFileStream stream = file.OpenFile(data,FileMode.OpenOrCreate,FileAccess.Read))

                    {

                        using (StreamReader reader = new StreamReader(stream))

                        {

                            _tbx_title.Text = data;

                            _tbx_body.Text = reader.ReadToEnd();

                        }

                    }

                }

            }

        }

        private void ApplicationBarIconButton_Click_2(object sender, EventArgs e)

        {

            using (IsolatedStorageFile file = IsolatedStorageFile.GetUserStoreForApplication())

            {

                file.DeleteFile(_tbx_title.Text);

                this.NavigationService.Navigate(new Uri("/Mainpage.xaml", UriKind.Relative));

            }

        }

    }

}