NavigationService.NavigationFailed 事件

定义

命名空间:
System.Windows.Navigation
程序集:
PresentationFramework.dll

在导航到请求的内容时出错时发生。

public:
 event System::Windows::Navigation::NavigationFailedEventHandler ^ NavigationFailed;
public event System.Windows.Navigation.NavigationFailedEventHandler NavigationFailed;
member this.NavigationFailed : System.Windows.Navigation.NavigationFailedEventHandler 
Public Custom Event NavigationFailed As NavigationFailedEventHandler 
Public Event NavigationFailed As NavigationFailedEventHandler

事件类型

NavigationFailedEventHandler

示例

下面的示例演示如何处理 NavigationFailed。

void NavigationService_NavigationFailed(object sender, NavigationFailedEventArgs e)
{
    string msg = string.Format("Navigation to {0} failed: {1}.", e.Uri.OriginalString, e.Exception.Message);
    this.progressStatusBarItem.Content = msg;
}

Private Sub NavigationService_NavigationFailed(ByVal sender As Object, ByVal e As NavigationFailedEventArgs)
    Dim msg As String = String.Format("Navigation to {0} failed: {1}.", e.Uri.OriginalString, e.Exception.Message)
    Me.progressStatusBarItem.Content = msg
End Sub

注解

在导航WebException期间引发或IOExceptionNavigationFailed引发事件时。 NavigationFailed 传递一个 NavigationFailedEventArgs 封装有关异常的信息和导致异常的导航的详细信息。

当异常导致导航失败且未经处理时，将按列出的顺序引发以下事件：

如果导航器 （NavigationWindow，） Frame由一个或多个导航器托管， NavigationFailed 则不会在任何导航器上引发。

适用于

另请参阅