我已经解析了RSS提要http://www.teluguone.com/videosongs/videoSongsXml.php?cat_id=6并显示在列表框中。当我自动点击某首歌时，它应该被导航并开始播放。但是当我点击一首歌时它会导航到其他页面但不会play.It正在显示＆＃34;发生错误请再试一次＃34;。我不明白问题所在。我写了以下代码。没有错误和警告正在上升。
请帮助我。我从很多天开始尝试这个。
Maipage.Xaml：
<phone:PhoneApplicationPage
x:Class="videosongs.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:delay="clr-namespace:Delay;assembly=PhonePerformance"
mc:Ignorable="d" d:DesignWidth="480" d:DesignHeight="768"
FontFamily="{StaticResource PhoneFontFamilyNormal}"
FontSize="{StaticResource PhoneFontSizeNormal}"
Foreground="{StaticResource PhoneForegroundBrush}"
SupportedOrientations="Portrait" Orientation="Portrait"
shell:SystemTray.IsVisible="True" Loaded="PhoneApplicationPage_Loaded">
<!--LayoutRoot is the root grid where all page content is placed-->
<Grid x:Name="LayoutRoot" Background="Transparent">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<!--TitlePanel contains the name of the application and page title-->
<StackPanel x:Name="TitlePanel" Grid.Row="0" Margin="12,17,0,28">
<TextBlock x:Name="ApplicationTitle" Text="Teluguone" Style="{StaticResource PhoneTextNormalStyle}"/>
<TextBlock x:Name="PageTitle" Text="Videosongs" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/>
</StackPanel>
<!--ContentPanel - place additional content here-->
<Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
<ListBox x:Name="songsList"
SelectionChanged="songsList_SelectionChanged">
<ListBox.ItemTemplate>
<DataTemplate>
<Grid Height="130">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="100"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Image delay:LowProfileImageLoader.UriSource="{Binding songpic}"
Grid.Column="0"
Width="97"
Height="125"
VerticalAlignment="Center"
HorizontalAlignment="Center"
Margin="6"/>
<StackPanel Margin="10,15,0,0"
Grid.Column="1"
Height="60"
Orientation="Horizontal"
VerticalAlignment="Top">
<TextBlock Text="{Binding songname}"
FontSize="30" />
</StackPanel>
<StackPanel Margin="0,50,0,0"
Grid.Column="1"
VerticalAlignment="Center">
<TextBlock Grid.Column="1"
Text="{Binding songdescr}"
Style='{StaticResource PhoneTextSubtleStyle}'
/>
<TextBlock Grid.Column="1"
Text="{Binding songdate}"
Style='{StaticResource PhoneTextSubtleStyle}'
/>
</StackPanel>
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
<ProgressBar x:Name="progress" Foreground="White" />
</Grid>
</Grid>
Mainpage.xaml.cs:
public partial class MainPage : PhoneApplicationPage
{
// Constructor
public MainPage()
{
InitializeComponent();
}
private void PhoneApplicationPage_Loaded(object sender, RoutedEventArgs e)
{
// is there network connection available
if (!System.Net.NetworkInformation.NetworkInterface.GetIsNetworkAvailable())
{
MessageBox.Show("No network connection available!");
return;
}
// start loading XML-data
WebClient downloader = new WebClient();
Uri uri = new Uri("http://www.teluguone.com/videosongs/videoSongsXml.php?cat_id=6", UriKind.Absolute);
downloader.DownloadStringCompleted += new DownloadStringCompletedEventHandler(VideosongsDownloaded);
downloader.DownloadStringAsync(uri);
}
void VideosongsDownloaded(object sender, DownloadStringCompletedEventArgs e)
{
try
{
if (e.Result == null || e.Error != null)
{
MessageBox.Show("There was an error downloading the XML-file!");
}
else
{
// Deserialize if download succeeds
XDocument document = XDocument.Parse(e.Result);
XmlSerializer serializer = new XmlSerializer(typeof(Videosongs));
Videosongs videosongs = (Videosongs)serializer.Deserialize(document.CreateReader());
songsList.ItemsSource = videosongs.Collection;
}
}
catch (Exception ex)
{
//MessageBox.Show(ex.InnerException.Message);
MessageBox.Show(ex.ToString());
}
}
// selection in SongsdetailsList is changed
private void songsList_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
ListBox listBox = sender as ListBox;
if (listBox != null && listBox.SelectedItem != null)
{
Songsdetails song = (Songsdetails)listBox.SelectedItem;
System.Diagnostics.Debug.WriteLine(song);
NavigationService.Navigate(new Uri("/Videopage.xaml?songsongcode=" + song.songcode , UriKind.Relative));
}
}
}
}
Songsdetails.cs： 公共课Songsdetails
{
[XmlElement("songname")]
public string songname { get; set; }
[XmlElement("songpic")]
public string songpic { get; set; }
[XmlElement("songcode")]
public string songcode { get; set; }
[XmlElement("songdescr")]
public string songdescr { get; set; }
[XmlElement("songtitletags")]
public string songtitletags { get; set; }
[XmlElement("songmetatags")]
public string songmetatags { get; set; }
[XmlElement("songmetadesc")]
public string songmetadesc { get; set; }
[XmlElement("songdate")]
public string songdate { get; set; }
[XmlElement("songurl")]
public string songurl { get; set; }
Videosongs.cs：
[XmlRoot("videosongs")]
public class Videosongs
{
//[XmlElement("publisher")]
//public string publisher { get; set; }
//[XmlElement("publisherurl")]
//public string publisherUrl { get; set; }
[XmlElement("songsdetails")]
public ObservableCollection<Songsdetails> Collection { get; set; }
Videopage.Xaml：
<phone:PhoneApplicationPage
x:Class="videosongs.Videopage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:extended="clr-namespace:MyToolkit.Controls;assembly=MyToolkit.Extended"
mc:Ignorable="d" d:DesignWidth="480" d:DesignHeight="768"
FontFamily="{StaticResource PhoneFontFamilyNormal}"
FontSize="{StaticResource PhoneFontSizeNormal}"
Foreground="{StaticResource PhoneForegroundBrush}"
SupportedOrientations="Portrait" Orientation="Landscape"
shell:SystemTray.IsVisible="False">
<StackPanel VerticalAlignment="Top" Height="600" Margin="0,0,0,0">
<TextBlock x:Name="title" TextWrapping="Wrap" VerticalAlignment="Top" Height="40"></TextBlock>
<phone:WebBrowser x:Name="webBrowser" Height="411" IsScriptEnabled="True" Margin="10,0,78,0" />
</StackPanel>
Videopage.Xaml.cs：
namespace videosongs
{
public partial class Videopage : PhoneApplicationPage
{
// Constructor
public Videopage()
{
InitializeComponent();
}
// When page is navigated to set data context to selected item in list
protected async override void OnNavigatedTo(NavigationEventArgs e)
{
if (!NetworkInterface.GetIsNetworkAvailable())
{
MessageBox.Show("An error has occurred! Please verify your internet connection.");
NavigationService.GoBack();
}
else
{
string video = "http://www.youtube.com/embed/+getsongcode()";
System.Diagnostics.Debug.WriteLine(video);
this.webBrowser.Navigate(new Uri(video));
}
}
}
任何人请帮助。非常感谢。
非常感谢提前。