c# - 如何在wpf中隐藏面板后面的项目

Question

我使用了下面的代码来控制显示

<Window x:Class="WpfApplication29.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Grid >
        <Border Margin="100" BorderThickness="3" BorderBrush="Black">
        <Canvas>
                <Label Content="This is test" FontSize="129" Width="400" Height="200"/>
            </Canvas>
        </Border>
    </Grid>
</Window>

如果它是 size，我想将它显示为从下方截取的第二个大于 parent control或者如果 margin is negative

Answer 1

您只需要为边框使用 ClipToBounds="True" 属性

 <Grid >
        <Border Margin="100" BorderThickness="3" BorderBrush="Black" ClipToBounds="True">
            <Canvas  >
                <Label Content="This is test" FontSize="129" Width="400" Height="200"/>
            </Canvas>
        </Border>
    </Grid>