Windows Phone 8.1 EventArgs类总结（C#描述）——NavigationEventArgs类

public sealed class NavigationEventArgs 

 1 private void NavigateButton_Click(object sender, RoutedEventArgs e)
 2 {
 3     ProgressRing1.IsActive = true;
 4 
 5     // Provide an indication as to where we are trying to navigate to
 6     rootPage.NotifyUser(String.Format("Navigating to: {0}", Address.Text), NotifyType.StatusMessage);
 7 
 8     // Hook the LoadCompleted event for the WebView to know when the URL is fully loaded
 9     WebView1.LoadCompleted += new Windows.UI.Xaml.Navigation.LoadCompletedEventHandler(WebView1_LoadCompleted);
10 
11     // Attempt to navigate to the specified URL.  Notice that a malformed URL will raise a FormatException
12     // which we catch and let the user know that the URL is bad and to enter a new well-formed one.
13     try
14     {
15         Uri targetUri = new Uri(Address.Text);
16         WebView1.Navigate(targetUri);
17     }
18     catch (FormatException myE)
19     {
20         // Bad address
21         rootPage.NotifyUser(String.Format("Address is invalid, try again.  Details --> {0}", myE.Message), NotifyType.ErrorMessage);
22     }
23 }
24 
25 void WebView1_LoadCompleted(object sender, Windows.UI.Xaml.Navigation.NavigationEventArgs e)
26 {
27     WebView1.Visibility = Windows.UI.Xaml.Visibility.Visible;
28     BlockingRect.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
29     ProgressRing1.IsActive = false;
30 
31     // Tell the user that the page has loaded
32     rootPage.NotifyUser("Page loaded", NotifyType.StatusMessage);
33 }
34 
35 void Address_KeyUp(object sender, KeyRoutedEventArgs e)
36 {
37     if (e.Key == Windows.System.VirtualKey.Enter)
38     {
39         NavigateButton_Click(this, new RoutedEventArgs());
40     }
41 }