如何禁用框架c#WPF中的导航快捷方式

本文关键字:导航 快捷方式 c#WPF 何禁用 框架 | 更新日期: 2023-09-27 17:59:12

如何禁用帧中的导航快捷方式(例如,"Backspace"用于向后导航,"Alt+Right arrow"用于向前导航)。

我想使用其他键盘功能,所以我想禁用框架的导航快捷键。

谁能帮我?

如何禁用框架c#WPF中的导航快捷方式

有一个更优雅的解决方案,可以使用附加行为来禁用导航,而无需实际扩展框架。

创建附加行为:

using System.Windows;
using System.Windows.Controls;
using System.Windows.Navigation;
namespace A
{
    public static class DisableNavigation
    {
        public static bool GetDisable(DependencyObject o)
        {
            return (bool)o.GetValue(DisableProperty);
        }
        public static void SetDisable(DependencyObject o, bool value)
        {
            o.SetValue(DisableProperty, value);
        }
        public static readonly DependencyProperty DisableProperty =
            DependencyProperty.RegisterAttached("Disable", typeof(bool), typeof(DisableNavigation),
                                                new PropertyMetadata(false, DisableChanged));

        public static void DisableChanged(object sender, DependencyPropertyChangedEventArgs e)
        {
            var frame = (Frame)sender;
                       frame.Navigated += DontNavigate;
            frame.NavigationUIVisibility = NavigationUIVisibility.Hidden;
        }
        public static void DontNavigate(object sender, NavigationEventArgs e)
        {
            ((Frame)sender).NavigationService.RemoveBackEntry();
        }
    }
}

在xaml中,每当你使用帧时都添加这个:

<Frame beha:DisableNavigation.Disable="True" />

并在xaml的顶部添加导入:

xmlns:beha="clr-namespace:A"

关于如何禁用键盘快捷键,请参阅以下答案:

禁用wpf 中的退格

这对前后导航鼠标按钮不起作用。为了防止这种情况发生,您似乎需要在Navigation事件上设置一个处理程序,如果不需要,则取消它

例如,要完全禁用前向导航:

In.xaml:

<Frame Navigating="HandleNavigating" />

在代码背后:

    void HandleNavigating(Object sender, NavigatingCancelEventArgs e)
    {
        if (e.NavigationMode == NavigationMode.Forward)
        {
            e.Cancel = true;
        }
    }

我所做的是在ContentControl中托管内容。

禁用WPF帧中所有快捷方式的真正答案是:

foreach (var vNavigationCommand in new RoutedUICommand[] 
                {   NavigationCommands.BrowseBack,
                    NavigationCommands.BrowseForward,
                    NavigationCommands.BrowseHome,
                    NavigationCommands.BrowseStop,
                    NavigationCommands.Refresh,
                    NavigationCommands.Favorites,
                    NavigationCommands.Search,
                    NavigationCommands.IncreaseZoom,
                    NavigationCommands.DecreaseZoom,
                    NavigationCommands.Zoom,
                    NavigationCommands.NextPage,
                    NavigationCommands.PreviousPage,
                    NavigationCommands.FirstPage,
                    NavigationCommands.LastPage,
                    NavigationCommands.GoToPage,
                    NavigationCommands.NavigateJournal })
{
    ctlFrame.CommandBindings.Add(new CommandBinding(vNavigationCommand, (sender, args) => { }));
}

框架本身不提供禁用导航的方法。它只提供了一种隐藏导航控件的方法。但是,您可以从Frame类继承,并自己对其进行一些修改。以下示例在每次导航页面时从BackStack中删除最后一个页面。因此,确保框架永远不会向后导航,因为它不知道最后一页是哪一页。

class NoNavFrame : Frame
{
    public NoNavFrame()
    {
        this.Navigated += new System.Windows.Navigation.NavigatedEventHandler(NoNavFrame_Navigated);
    }
    void NoNavFrame_Navigated(object sender, System.Windows.Navigation.NavigationEventArgs e)
    {
        this.NavigationService.RemoveBackEntry();
    }
}

然后您可以将其包含在XAML中,如下所示。。。

    <myControls:NoNavFrame x:Name="myFrame" NavigationUIVisibility="Hidden" />
Webview2 edge = new Webview2();
public Form1()
{
    InitializeComponent();
    edge.KeyDown += EdgeWebBrowser_KeyDown;
}
private void EdgeWebBrowser_KeyDown(object sender, KeyEventArgs e)
{
    if (((e.KeyCode == Keys.Left) && (GetAsyncKeyState(Keys.Menu) < 0)) || ((e.KeyCode == Keys.Right) && (GetAsyncKeyState(Keys.Menu) < 0)) || (e.KeyCode == Keys.F5) || ((e.KeyCode == Keys.R) && (GetAsyncKeyState(Keys.ControlKey) < 0)))
        {
            e.Handled = true;
        }
}