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NavigationService.GetNavigationService Method

Gets a reference to the NavigationService for the navigator whose content contains the specified DependencyObject.

Namespace:  System.Windows.Navigation
Assembly:  PresentationFramework (in PresentationFramework.dll)
public static NavigationService GetNavigationService(
	DependencyObject dependencyObject
)

Parameters

dependencyObject
Type: System.Windows.DependencyObject
The DependencyObject in content that is hosted by a navigator.

Return Value

Type: System.Windows.Navigation.NavigationService
A reference to the NavigationService for the navigator whose content contains the specified DependencyObject; can be null in some cases (see Remarks).
ExceptionCondition
ArgumentNullException

The dependencyObject parameter is null.

A navigator has a NavigationService that handles content navigation. WPF has two navigators: NavigationWindow and Frame. To process navigation requests and manage navigation lifetime, a navigator uses the WPF navigation service, which is implemented as the NavigationService class. Content that is hosted by a navigator can get a reference to the navigator's NavigationService by calling the GetNavigationService method.

GetNavigationService returns null when the dependencyObject:

WPF offers two shortcuts for acquiring a reference to the NavigationService:

The following example shows how a UserControl can retrieve a navigation service by calling GetNavigationService.


void getNavigationServiceButton_Click(object sender, RoutedEventArgs e) {
    // Retrieve first navigation service up the content tree
    NavigationService svc = NavigationService.GetNavigationService(this.getNavigationServiceButton);
    if (svc != null)
    {
        // Use navigation service


...


    }
}


.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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