I'm making an atom reader for Windows Phone. The mainpage.xaml.cs code looks like this:
void ywc_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
{
StringReader sr = new StringReader(e.Result);
var reader = XmlReader.Create(sr);
var document = XDocument.Load(reader);
XNamespace atom = "http://www.w3.org/2005/Atom";
XNamespace media = "http://search.yahoo.com/mrss/";
var YTitems = from entry in document.Descendants(atom + "entry")
select new RSSFeed
{
ImageSRC = entry.Element(media + "group").Element(media + "thumbnail").Attribute("url").Value,
Title = entry.Element(atom + "title").Value,
pubDate = entry.Element(atom + "published").Value.Substring(0, 10),
VideoURL = entry.Element(media + "group").Element(media + "content").Attribute("url").Value
};
YoutubeList.ItemsSource = YTitems.ToList();
}
private void screenshot_Tap(object sender, System.Windows.Input.GestureEventArgs e)
{
Uri uri = new Uri("insertyoutubeurihere");
WebBrowserTask webBrowserTask = new WebBrowserTask();
webBrowserTask.Uri = uri;
webBrowserTask.Show();
}
The mainpage.xaml code looks like this:
<phone:LongListSelector Margin="0,0,-22,0" Name="YoutubeList">
<phone:LongListSelector.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal" Margin="12,2,0,4" Width="Auto">
<Image x:Name="screenshot" Source="{Binding Path=ImageSRC}" Width="150" Tap="screenshot_Tap"/>
<StackPanel Width="311" Margin="8,-7,0,0">
<TextBlock Text="{Binding Path=Title}" TextWrapping="Wrap" Margin="10,0" Style="{StaticResource PhoneTextLargeStyle}" FontSize="{StaticResource PhoneFontSizeMedium}" />
<TextBlock Text="{Binding Path=pubDate}" TextWrapping="Wrap" Margin="10,-2,10,0" Style="{StaticResource PhoneTextSubtleStyle}" />
</StackPanel>
</StackPanel>
</DataTemplate>
</phone:LongListSelector.ItemTemplate>
</phone:LongListSelector>
I don't really know how I can link the uri to the corresponding VideoURL.
So when he user taps, than it opens the webpage with the url of the video.
You can use a Command binding. Instead of two textblocks you can use a button or Hyperlink. Bind the Command property of the button or hyperlink to an ICommand property of your viewmodel.
More information about ICommand: http://msdn.microsoft.com/library/vstudio/system.windows.input.icommand
In case you are using MVVM Light, you could also take a look at the RelayCommand class.
this:
<StackPanel>
<HyperlinkButton Height="310"
Width="200"
NavigateUri="{Binding Path=ImageSRC}"
Name="hyperlinkButton1"
TargetName="_blank">
<HyperlinkButton.Background>
<ImageBrush ImageSource="{Binding Path=ImageSRC}"/>
</HyperlinkButton.Background>
</HyperlinkButton>
...
</StackPanel>
Just use this:
System.Diagnostics.Process.Start(urlString);
...
this should launch the url in the default browser, no matter what platform you're on (WinXP, WinVista, Win7, Win8, etc)...
keep in mind that it expects a full url to recognize it as that and launch the browser...
Related
I am parsing some JSON data using Newtonsoft.NET for my WP8 app in C#/XAML and everything works fine except the binding of NavigationUri to the HyperlinkButton. Here is the DataTemplate of my databound LongListSelector:
<DataTemplate>
<StackPanel Margin="10 10 10 20" Background="{StaticResource PhoneAccentBrush}">
<TextBlock Text="{Binding MovieTitle }" TextWrapping="Wrap" FontSize="18" />
<TextBlock Text="{Binding ImdbCode }" TextWrapping="Wrap" FontSize="18" />
<HyperlinkButton NavigateUri="{Binding ImdbLink}">View on IMDB</HyperlinkButton>
<Image Source="{Binding MovieCover}" Width="300" Height="300" HorizontalAlignment="Center"/>
<TextBlock Text="{Binding ImdbLink}" TextWrapping="Wrap" FontSize="18" />
</StackPanel>
</DataTemplate>
This way everything is loaded correctly but the HyperLinkButton doesn't navigate to the Uri.
What should I do to make sure the navigation works?
If it is not possible with HyperLinkButton then can I add a regular button to which I could pass the url so that OnClick event can navigate to url.
Assuming the url is correct the webbrowser can be activated like this:
XAML
<HyperlinkButton NavigateUri="{Binding ImdbLink}"
Click="NavigateButton_Click">View on IMDB</HyperlinkButton>
C#
private void NavigateButton_Click(object sender, RoutedEventArgs e)
{
var hyperlinkButton = sender as HyperlinkButton;
if(hyperlinkButton == null)
{
return;
}
ShowInBrowser(hyperlinkButton.NavigateUri);
}
private void ShowInBrowser(Uri url)
{
Microsoft.Phone.Tasks.WebBrowserTask wbt =
new Microsoft.Phone.Tasks.WebBrowserTask();
wbt.Uri = url;
wbt.Show();
}
This is because you have no RequestNavigate method. Try:
<HyperlinkButton NavigateUri="{Binding ImdbLink}" RequestNavigate="Hyperlink_RequestNavigate">View on IMDB</HyperlinkButton>
and in your code behind for the view put
private void Hyperlink_RequestNavigate(object sender, RequestNavigateEventArgs e)
{
Process.Start(new ProcessStartInfo(e.Uri.AbsoluteUri));
e.Handled = true;
}
or however you want to deal with that click event (i.e. open a new webview with that as the url)
I'm trying to create an ItemTemplate for a ListBox programmatically but it doesn't work. I know in XAML I can have something like:
<ListBox x:Name="listbox" BorderThickness="0" Margin="6" Height="400">
<ListBox.ItemTemplate>
<DataTemplate>
<TextBlock Margin="0" Background="Red" Foreground="White" FontSize="18" Text="{Binding}" />
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
But when I'm trying to have the above result programmatically I face a problem which is binding the TextBox.TextProperty:
var textblock = new FrameworkElementFactory(typeof(TextBlock));
// Setting some properties
textblock.SetValue(TextBlock.TextProperty, ??);
var template = new ControlTemplate(typeof(ListBoxItem));
template.VisualTree = textblock;
Please help me on this issue. I couldn't find anything on the web about it.
Thanks in advance.
Try use dot . in Binding, this is the equivalent of {Binding}.
Example:
XAML
<Window x:Class="MyNamespace.MainWindow"
...
Loaded="Window_Loaded">
<ListBox Name="MyListBox" ... />
</Window>
Code-behind
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void Window_Loaded(object sender, RoutedEventArgs e)
{
var textBlockFactory = new FrameworkElementFactory(typeof(TextBlock));
textBlockFactory.SetValue(TextBlock.TextProperty, new Binding(".")); // Here
textBlockFactory.SetValue(TextBlock.BackgroundProperty, Brushes.Red);
textBlockFactory.SetValue(TextBlock.ForegroundProperty, Brushes.Wheat);
textBlockFactory.SetValue(TextBlock.FontSizeProperty, 18.0);
var template = new DataTemplate();
template.VisualTree = textBlockFactory;
MyListBox.ItemTemplate = template;
}
}
Try this, by binding the "listbox" with ItemsSource and specify the datatemplate below like if you want to bind name then just write {Binding Name}
<ListBox x:Name="listbox" BorderThickness="0" Margin="6" Height="400" ItemsSource="{Binding}">
<ListBox.ItemTemplate>
<DataTemplate>
<TextBlock Margin="0" Background="Red" Foreground="White" FontSize="18" Text="{Binding Name}" />
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
Here is my xaml of the Panorama page item.
<controls:PanoramaItem x:Name="deeln" Header="Deelnemers" Style="{StaticResource subtitle}">
<!--Double line list with image placeholder and text wrapping-->
<ListBox Margin="12,0,-12,0" ItemsSource="{Binding ItemsDeelnemer}" x:Name="lbDeelnemer" SelectionChanged="lbDeelnemer_SelectionChanged">
<ListBox.ItemTemplate>
<DataTemplate>
<ScrollViewer HorizontalScrollBarVisibility="Visible" VerticalScrollBarVisibility="Disabled">
<StackPanel Orientation="Horizontal" Margin="0,0,0,17">
<TextBlock Foreground="Black" TextWrapping="Wrap" Text="{Binding LineNr}" Style="{StaticResource PhoneTextExtraLargeStyle}" ></TextBlock>
<StackPanel Width="430" Height="100">
<TextBlock Foreground="Black" TextWrapping="Wrap" Text="{Binding LineNaamWielrenner1}" Style="{StaticResource PhoneTextExtraLargeStyle}" FontSize="35"></TextBlock>
<TextBlock Foreground="Black" TextWrapping="Wrap" Text="{Binding LineNaamWielrenner2}" Style="{StaticResource PhoneTextExtraLargeStyle}" FontSize="35"></TextBlock>
</StackPanel>
</StackPanel>
</ScrollViewer>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</controls:PanoramaItem>
Here is my code in the Panorama page.
private void lbDeelnemer_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
#region go to specific deelnemerinfo screen
// If selected index is -1 (no selection) do nothing
if (lbDeelnemer.SelectedIndex == -1)
return;
// Navigate to the new page
if (lbDeelnemer.SelectedIndex == 0)
{
NavigationService.Navigate(new Uri("/DeelnemerInfo.xaml", UriKind.Relative));
//NavigationService.Navigate(new Uri("/DeelnemerInfo.xaml?selectedItem=" + lbDeelnemer.SelectedIndex, UriKind.Relative));
}
// Reset selected index to -1 (no selection)
lbDeelnemer.SelectedIndex = -1;
#endregion
}
Here is my code from the non panorama page.
protected override void OnNavigatedTo(NavigationEventArgs e)
{
//second try
string strItemIndex;
if (NavigationContext.QueryString.TryGetValue("goto", out strItemIndex))
PanoramaControl.DefaultItem = MyPanorama.Items[Convert.ToInt32(strItemIndex)];
base.OnNavigatedTo(e);
//first try
string selectedIndex = "";
if (NavigationContext.QueryString.TryGetValue("selectedItem", out selectedIndex))
{
int index = int.Parse(selectedIndex);
DataContext = App.ViewModel.ItemsDeelnemer[index];
}
}
My problem, I want to navigate like you do with a default databound application. You click on the first listitem and you go to a new page (non panorama).
It looks simple but i can't find it.
Try binding the tag attribute to the index/itemvalue
<ListBox>
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel>
<HyperlinkButton Tag="{Binding FileName}" Click="location_Click"/>
<TextBlock Text="{Binding DateCreated}"/>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
navigate accordingly
private void location_Click(object sender, RoutedEventArgs e)
{
HyperlinkButton clicked = (HyperlinkButton)sender;
string uri = "/noteapp;component/ViewEdit.xaml?id=" + clicked.Tag;
NavigationService.Navigate(new Uri(uri, UriKind.Relative));
}
and on panaroma page use this something like this to retrieve the value
filename = NavigationContext.QueryString["id"];
var storage = IsolatedStorageFile.GetUserStoreForApplication();
using (var file = storage.OpenFile(filename, FileMode.Open))
I'm trying to make an aplication where I have a lot of link to differen web sites on a stackpanel, getting there content from a MainViewModel, so when I click on the description it opens the web via WebBrowserTask. However, I want to have the Uri on the MainViewModel and get that info in the .cs, which takes me to the site
My xaml code is
<ListBox Margin="0,0,-12,0" ItemsSource="{Binding Items}">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal" Margin="0,0,0,17" Tap=Open_Web>
<Image Height="100" Width="100" Margin="0,0,0,0" Source="{Binding ImgWeb}" HorizontalAlignment="Left"/>
<StackPanel Width="311">
<TextBlock Text="{Binding LineOne}" TextWrapping="Wrap" Style="{StaticResource PhoneTextExtraLargeStyle}"/>
<TextBlock Text="{Binding LineTwo}" TextWrapping="Wrap" Margin="12,-6,12,0" Style="{StaticResource PhoneTextSubtleStyle}"/>
</StackPanel>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
My .cs is
private void Open_Web(object sender, RoutedEventArgs e)
{
WebBrowserTask webBrowserTask = new WebBrowserTask();
webBrowserTask.Uri = new Uri("I DONT KNOW");
webBrowserTask.Show();
And my MainViewModel code is:
this.Items.Add(new ItemViewModel() { LineOne = "Web Name", LineTwo = "Web description", Uri = "http://WebSite.com" });
If I dont bind the info, It works, but I dont know how to get the Uri on webBrowserTask.Uri = new Uri("I DONT KNOW"); form the MainViewModel
Add the following code to the beginning of Open_Web method
var templateRoot = (FrameworkElement)sender;
var dataItem = (ItemViewModel)templateRoot.DataContext;
var uri = dataItem.Uri;
I had a problem with passing a parsed string to a button click event. It was solved in this thread here, but now there's another small problem but it's with LINQ TO XML. I'm making a page which will show all of the apps that I make and will be updated with XML which I'll host on my server. On that page I'm parsing the icon, the title, the price and the marketplace Uri of the apps. I'm binding the Uri and the title of the apps to a single hyperlinkbutton but the problem is that every hyperlinkbutton on the list takes me to the same marketplace page. How can I fix it so every hyperlinkbutton navigates to a different page?
Here's the code:
public partial class MorePage : PhoneApplicationPage
{
private string appLink;
public MorePage()
{
InitializeComponent();
}
protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e)
{
WebClient client = new WebClient();
Uri uritoXML = new Uri("http://www.allanhaapalainen.com/AppsXML/MorePageXML.xml", UriKind.RelativeOrAbsolute);
client.DownloadStringCompleted += new DownloadStringCompletedEventHandler(client_DownloadStringCompleted);
client.DownloadStringAsync(uritoXML);
base.OnNavigatedTo(e);
}
public void client_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
{
XDocument moreApps = XDocument.Parse(e.Result);
morePageAppList.ItemsSource = from Apps in moreApps.Descendants("App")
select new MoreApps
{
MoreImage = Apps.Element("link").Value,
Price = Apps.Element("price").Value,
Title = Apps.Element("title").Value
};
var attribute = (from Apps in moreApps.Descendants("App")
select new MoreApps
{
AppAttribute = (string)Apps.Attribute("id").Value
}).FirstOrDefault();
string appAttr = attribute.AppAttribute;
var link = (from Apps in moreApps.Descendants("App")
where Apps.Attribute("id").Value == appAttr
select new MoreApps
{
AppUri = (string)Apps.Element("marketplace").Value
}).FirstOrDefault();
appLink = link.AppUri;
}
private void App_Name_Click(object sender, RoutedEventArgs e)
{
ShowMarket(appLink);
}
private void ShowMarket(string id)
{
MarketplaceDetailTask marketplaceDetailTask = new MarketplaceDetailTask();
marketplaceDetailTask.ContentIdentifier = id;
marketplaceDetailTask.Show();
}
}
AND THE XAML:
<ListBox Height="500" Width="Auto" Name="morePageAppList" Margin="0,0,0,0" ItemsSource="{Binding}">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal" Height="173">
<Image Source="{Binding MoreImage}" Height="Auto" Width="Auto" />
<StackPanel Orientation="Vertical">
<HyperlinkButton Name="appName" Content="{Binding Title}" Margin="15,60,0,0" Click="App_Name_Click" />
<TextBlock Name="price" Text="{Binding Price}" Margin="28,0,0,0" Foreground="#FFBD0000" />
</StackPanel>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
Like I mentioned in your previous post, you can use the tag parameter. Update your DataTemplate
<DataTemplate>
<StackPanel Orientation="Horizontal" Height="173">
<Image Source="{Binding MoreImage}" Height="Auto" Width="Auto" />
<StackPanel Orientation="Vertical">
<HyperlinkButton Name="appName" Content="{Binding Title}" Tag="{Binding}" Margin="15,60,0,0" Click="App_Name_Click" />
<TextBlock Name="price" Text="{Binding Price}" Margin="28,0,0,0" Foreground="#FFBD0000" />
</StackPanel>
</StackPanel>
</DataTemplate>
then in your event
private void App_Name_Click(object sender, RoutedEventArgs e)
{
var button = (HyperLinkButton)sender;
var selectedApp = (MoreApps)button.Tag;
ShowMarket(selectedApp.AppUri);
}