首页 > 代码库 > Windows Phone 8.1 EventArgs类总结（C#描述）——NavigationEventArgs类
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 FormatException12 // which we catch and let the user know that the URL is bad and to enter a new well-formed one.13 try14 {15 Uri targetUri = new Uri(Address.Text);16 WebView1.Navigate(targetUri);17 }18 catch (FormatException myE)19 {20 // Bad address21 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 loaded32 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
Windows Phone 8.1 EventArgs类总结（C#描述）——NavigationEventArgs类
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