使用二传手而不是代码进行样式设置
本文关键字:样式 设置 代码 二传手 | 更新日期: 2023-09-27 18:33:47
>我在 WPF 应用程序中有一个控件,我需要折叠一个元素,该元素未公开,所以我需要使用 Loaded 事件上的代码折叠它,如下所示。
Stema.Controls.NavigationPane navPane = (Stema.Controls.NavigationPane)sender;
DockPanel docPanel =(DockPanel)VisualTreeHelper.GetChild(navPane, 0);
Border border = (Border)VisualTreeHelper.GetChild(docPanel, 1);
Grid grid = (Grid)VisualTreeHelper.GetChild(border, 0);
DockPanel docPanel1 = (DockPanel)VisualTreeHelper.GetChild(grid, 4);
docPanel1.Visibility = Visibility.Collapsed;
我的问题,有没有办法用样式和二传手来做到这一点,我如何在可视化树中找到 uname 元素。
编辑
代码隐藏
private void NavPane_Loaded(object sender, RoutedEventArgs e)
{
Stema.Controls.NavigationPane navPane = (Stema.Controls.NavigationPane)sender;
DockPanel docPanel =(DockPanel)VisualTreeHelper.GetChild(navPane, 0);
Border border = (Border)VisualTreeHelper.GetChild(docPanel, 1);
Grid grid = (Grid)VisualTreeHelper.GetChild(border, 0);
DockPanel docPanel1 = (DockPanel)VisualTreeHelper.GetChild(grid, 4);
docPanel1.Visibility = Visibility.Collapsed;
}
XAML
<s:NavigationPane Loaded="NavPane_Loaded" x:Name="navigationPane" SelectedIndex="0" LargeItems="2" Margin="2,0,0,1" IsMinimized="False" Width="200" DockPanel.Dock="Left" Background="White" >
<s:NavigationPaneItem Header="Reportitems" Name="intro" >
<ContentControl x:Name="ActionContent" prism:RegionManager.RegionName="{x:Static inf:RegionNames.LeftNavigationRegion}" VerticalAlignment="Stretch" >
<ContentControl.Template>
<ControlTemplate TargetType="ContentControl">
<ContentPresenter Content="{TemplateBinding Content}" />
<ControlTemplate.Triggers>
<Trigger Property="HasContent" Value="false">
<Setter Property="Visibility" Value="Collapsed" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</ContentControl.Template>
</ContentControl>
</s:NavigationPaneItem>
</s:NavigationPane>
恐怕您必须为此使用可视化树助手(就像您现在正在使用的那样),因为您的控件是第三方控件,因此可能被密封以进行模板覆盖。