当属性值大于一定数量时触发 WPF [英] WPF Trigger when property value is greater than a certain amount

问题描述

我想做这样的事情:

<ControlTemplate.Triggers>
    <Trigger Property="Width" Value=">25">
       <!-- Set values here -->
    </Trigger>
</ControlTemplate.Triggers>

无论如何要做这样的事情?

Anyway to do something like this?

推荐答案

您可以使用数据触发器并将绑定 RelativeSource 设置为 Self.数据触发器允许绑定，绑定让您拥有转换器.

You can use a data trigger and set the binding RelativeSource to Self. Data Triggers allow binding and bindings lets you have converters.

示例:

   <Button Content="I change colour depending on my width for some reason">
        <Button.Triggers>
            <DataTrigger
                Binding="{Binding
                Path=Width,
                RelativeSource={RelativeSource Self},
                Converter={StaticResource isLessThanConverter},
                ConverterParameter=50}"
                Value="True">
                <Setter Property="Button.Background" Value="Red" />
            DataTrigger>
        Button.Triggers>
    Button>

参考

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