wpf - 当其他两个控件已经隐藏时如何隐藏控件？

Question

我有一行三列的 WPF 网格：

标签1 | 控制1 | 控制2

当两个控件都被隐藏时，我想将Label1可见性设置为隐藏：

在 XAML 中执行此操作的任何简单方法？

Answer 1

you can use Multibinding and a MultiConverter on Label1.Visibility to do this job

or you use Style Trigger for your Label1 and set the initial visibility to hidden and use 2 triggers to set the visibility to visible if one of the controls are visible

EDIT

    <Label x:Name=Label1>
        <Label.Style>
            <Style TargetType="Label">
                <Setter Property="Visibility" Value="Hidden"/>
                <Style.Triggers>
                    <DataTrigger Binding="{Binding ElementName=ctl1, Path=Visibility}" Value="Visible">
                        <Setter Property="Visibility" Value="Visible"/>
                    </DataTrigger>
                    <DataTrigger Binding="{Binding ElementName=ctl2, Path=Visibility}" Value="Visible">
                        <Setter Property="Visibility" Value="Visible"/>
                    </DataTrigger>
                </Style.Triggers>
            </Style>
        </Label.Style>
    </Label>