How to open a webView in Windows Phone 7.x? - windows-phone-7

Question

I would like my app to have only one view.
I need this view to be an external URL.
I tried to use the webBrowser Task following the example on microsoft.
I put on my constractor :
WebBrowserTask webBrowserTask = new WebBrowserTask();
webBrowserTask.Uri = new Uri("http://msdn.microsoft.com", UriKind.Absolute);
webBrowserTask.Show();
However when i press the back button instead of navigating outside the app , i am navigating to the first page which is empty...
My code looks like this :
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;
//added this for push
using Microsoft.Phone.Notification;
using System.Text;
//added this to open an external URL using the WebBrowser Task
using Microsoft.Phone.Tasks;
namespace WindowsPush
{
public partial class MainPage : PhoneApplicationPage
{
// Constructor
public MainPage()
{
/// Holds the push channel that is created or found.
HttpNotificationChannel pushChannel;
// The name of our push channel.
string channelName = "ToastSampleChannel";
InitializeComponent();
// Try to find the push channel.
pushChannel = HttpNotificationChannel.Find(channelName);
// If the channel was not found, then create a new connection to the push service.
if (pushChannel == null)
{
pushChannel = new HttpNotificationChannel(channelName);
// Register for all the events before attempting to open the channel.
pushChannel.ChannelUriUpdated += new EventHandler<NotificationChannelUriEventArgs>(PushChannel_ChannelUriUpdated);
pushChannel.ErrorOccurred += new EventHandler<NotificationChannelErrorEventArgs>(PushChannel_ErrorOccurred);
// Register for this notification only if you need to receive the notifications while your application is running.
//pushChannel.ShellToastNotificationReceived += new EventHandler<NotificationEventArgs>(PushChannel_ShellToastNotificationReceived);
pushChannel.Open();
// Bind this new channel for toast events.
pushChannel.BindToShellToast();
}
else
{
// The channel was already open, so just register for all the events.
pushChannel.ChannelUriUpdated += new EventHandler<NotificationChannelUriEventArgs>(PushChannel_ChannelUriUpdated);
pushChannel.ErrorOccurred += new EventHandler<NotificationChannelErrorEventArgs>(PushChannel_ErrorOccurred);
// Register for this notification only if you need to receive the notifications while your application is running.
//pushChannel.ShellToastNotificationReceived += new EventHandler<NotificationEventArgs>(PushChannel_ShellToastNotificationReceived);
// Display the URI for testing purposes. Normally, the URI would be passed back to your web service at this point.
System.Diagnostics.Debug.WriteLine(pushChannel.ChannelUri.ToString());
// MessageBox.Show(String.Format("Channel Uri is {0}", pushChannel.ChannelUri.ToString()));
}
object uniqueID;
if (Microsoft.Phone.Info.DeviceExtendedProperties.TryGetValue("DeviceUniqueId", out uniqueID) == true)
{
byte[] bID = (byte[])uniqueID;
string deviceID = Convert.ToBase64String(bID); // There you go
System.Diagnostics.Debug.WriteLine("Device Unique Id is: {0}", deviceID);
}
//opening the external URL using webBrowserTask
WebBrowserTask webBrowserTask = new WebBrowserTask();
webBrowserTask.Uri = new Uri("http://msdn.microsoft.com", UriKind.Absolute);
webBrowserTask.Show();
}
void PushChannel_ChannelUriUpdated(object sender, NotificationChannelUriEventArgs e)
{
Dispatcher.BeginInvoke(() =>
{
// Display the new URI for testing purposes. Normally, the URI would be passed back to your web service at this point.
System.Diagnostics.Debug.WriteLine(e.ChannelUri.ToString());
MessageBox.Show(String.Format("Channel Uri is {0}", e.ChannelUri.ToString()));
});
}
void PushChannel_ErrorOccurred(object sender, NotificationChannelErrorEventArgs e)
{
// Error handling logic for your particular application would be here.
Dispatcher.BeginInvoke(() =>
MessageBox.Show(String.Format("A push notification {0} error occurred. {1} ({2}) {3}", e.ErrorType, e.Message, e.ErrorCode, e.ErrorAdditionalData)));
}
}
}
What i need is just load an external URL on the first and only view of my app.
How could i do that?

Answer 1

You're looking for the WebBrowser control. Add it to the main application page and handle it like you would a WebBrowserTask.

Answer 2

If you're going to use the WebBrowserTask then you could close the app on returning to it by throwing an unhandled exception:
protected override void OnNavigatedTo(NavigationEventArgs e)
{
if (e.NavigationMode == NavigationMode.Back)
{
throw new Exception("deliberately doing this to force the app to close");
}
}
If/when you do this in Windows Phone 8 you can call Application.Current.Terminate(); instead of throwing the exception.
Be sure to check the marketplace certification requirements for apps that just launch an external website before submitting though.