将 TabPanel 更改为 Visibility.Collapsed 在代码隐藏中

问题描述 投票:0回答:1

我目前遇到以下问题:WPF TabControl 折叠选项卡标题未完全隐藏(当我折叠 TabItems 时,我仍然看到 TabControl 标题所在位置有一条由几个像素组成的灰线)

但我不能在 XAML 中做到这一点(我认为),因为只有当应用程序进入全屏时我才需要隐藏 TabPanel,所以当应用程序退出全屏时,TabPanel 应该恢复可见。

我对样式经验较少,请问如何在代码中将 TabControl 的 TabPanel 设置为 Visibility.Collapsed ?

感谢您的时间和帮助,非常感谢!

wpf tabs tabcontrol code-behind
1个回答
0
投票

如果我正确理解你需要什么,那么尝试这个实现:

<Window x:Class="Core2023.TabsWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        mc:Ignorable="d"
        Title="TabsWindow" Height="450" Width="800">
    <Grid>
        <TabControl x:Name="tc">
            <TabItem Header="First">
                <Border Background="Aqua"/>
            </TabItem>
            <TabItem Header="Second">
                <Border Background="Yellow"/>
            </TabItem>
        </TabControl>
        <CheckBox Content="TabPanel Is Visibile"
                  IsChecked="True" HorizontalAlignment="Center" VerticalAlignment="Center"
                  Click="OnIsVisibile"/>
    </Grid>
</Window>
        private void OnIsVisibile(object sender, RoutedEventArgs e)
        {
            CheckBox cb = (CheckBox)sender;
            Panel panel = tc.GetVisualChild<TabPanel>();
            panel.Visibility = cb.IsChecked == true ? Visibility.Visible : Visibility.Collapsed;
        }
        public static T GetVisualChild<T>(this DependencyObject parent) where T : Visual
        {
            T child = default(T);

            int numVisuals = VisualTreeHelper.GetChildrenCount(parent);
            for (int i = 0; i < numVisuals; i++)
            {
                Visual v = (Visual)VisualTreeHelper.GetChild(parent, i);
                child = v as T;
                if (child == null)
                {
                    child = GetVisualChild<T>(v);
                }
                if (child != null)
                {
                    break;
                }
            }
            return child;
        }
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