Frame.NavigationService 屬性

定義

命名空間:

System.Windows.Controls

組件:

PresentationFramework.dll

取得此 NavigationService 用來提供巡覽服務的 Frame。

public:
 property System::Windows::Navigation::NavigationService ^ NavigationService { System::Windows::Navigation::NavigationService ^ get(); };

public System.Windows.Navigation.NavigationService NavigationService { get; }

member this.NavigationService : System.Windows.Navigation.NavigationService

Public ReadOnly Property NavigationService As NavigationService

屬性值

NavigationService

Frame 物件，表示此 NavigationService 所使用的 Frame (若有的話)。 否則，傳回 null。

備註

Frame 會使用 NavigationService 來支援裝載內容的流覽。 NavigationService 適用于裝載 Frame 的程式碼，以取得 的 NavigationService 參考。 由 Frame 裝載的內容，例如 Page ，應該使用 GetNavigationService 或 NavigationService 來取得 的 NavigationService 參考。

注意

NavigationService不會傳回與呼叫 GetNavigationService 和 傳遞 Frame 相同的 NavigationService 參考。 前者會傳回 NavigationService 所 Frame 擁有的 ，而後者會傳回 NavigationService 巡覽至 裝載 之內容的 Frame 導覽主機。 下列程式碼示範差異。

using System.Windows.Controls;
using System.Windows.Navigation;

Imports System.Windows.Controls
Imports System.Windows.Navigation

// Get the NavigationService owned by the Frame
NavigationService frameNS = this.frame.NavigationService;

// Get the NavigationService for the navigation host that navigated
// to the content in which the Frame is hosted
NavigationService navigationHostNS = NavigationService.GetNavigationService(this.frame);

' Get the NavigationService owned by the Frame
Dim frameNS As NavigationService = Me.frame.NavigationService

' Get the NavigationService for the navigation host that navigated
' to the content in which the Frame is hosted
Dim navigationHostNS As NavigationService = NavigationService.GetNavigationService(Me.frame)