通过

NavigationView.BackRequested 事件

  • 参考

定义

命名空间:
Windows.UI.Xaml.Controls
编辑

当后退按钮收到交互（例如单击或点击）时发生。

适用于 UWP 的等效 WinUI 2 API：Windows 应用 SDK中用于 WinUI 的 Microsoft.UI.Xaml.Controls.NavigationView.BackRequested (，请参阅Windows 应用 SDK命名空间) 。

// Register
event_token BackRequested(TypedEventHandler<NavigationView, NavigationViewBackRequestedEventArgs const&> const& handler) const;

// Revoke with event_token
void BackRequested(event_token const* cookie) const;

// Revoke with event_revoker
NavigationView::BackRequested_revoker BackRequested(auto_revoke_t, TypedEventHandler<NavigationView, NavigationViewBackRequestedEventArgs const&> const& handler) const;
public event TypedEventHandler<NavigationView,NavigationViewBackRequestedEventArgs> BackRequested;
function onBackRequested(eventArgs) { /* Your code */ }
navigationView.addEventListener("backrequested", onBackRequested);
navigationView.removeEventListener("backrequested", onBackRequested);
- or -
navigationView.onbackrequested = onBackRequested;
Public Custom Event BackRequested As TypedEventHandler(Of NavigationView, NavigationViewBackRequestedEventArgs) 
<NavigationView BackRequested="eventhandler" />

事件类型

TypedEventHandler<NavigationView,NavigationViewBackRequestedEventArgs>

Windows 要求

设备系列
Windows 10, version 1803 (在 10.0.17134.0 中引入)
API contract
Windows.Foundation.UniversalApiContract (在 v6.0 中引入)

适用于

另请参阅