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

链接：https://msdn.microsoft.com/en-us/library/windows/apps/windows.ui.xaml.navigation.navigationeventargs(v=win.10).aspx

NavigationEventArgs类

为无法取消的导航事件及事件处理器函数所需的数据。该类直接继承于Object类。

public sealed class NavigationEventArgs 

该类所具有的成员有：

名称	访问类型	类别	说明	延伸
Content	只读	属性（properties）	获取目标页面的根节点
NavigationMode	只读	属性（properties）	导航时的移动方向	可能的取值：New、Back、Forward、Refresh。
NavigationTransitionInfo	只读	属性（properties）	导航时的动画类型	public class NavigationTransitionInfo : DependencyObject
Parameter	只读	属性（properties）	传递的参数
SourcePageType	只读	属性（properties）	源页面的数据类型
Uri	读写	属性（properties）	目标内容的Uri

举例：

 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 }

待续