wpf 如何在 XAML 中为边框设置 MouseOver 事件/触发器？
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How to set MouseOver event/trigger for border in XAML?
提问by Boris
I want the border to turn green when the mouse is over it and then to return to blue when the mouse is no longer over the border.
我希望边框在鼠标悬停在边框上方时变为绿色，然后在鼠标不再悬停在边框上方时返回蓝色。
I attempted this without any luck:
我在没有任何运气的情况下尝试了这个：
<Border
Name="ClearButtonBorder"
Grid.Column="1"
CornerRadius="0,3,3,0"
Background="Blue">
<Border.Triggers>
<Trigger Property="Border.IsMouseOver" Value="True">
<Setter Property="Border.Background" Value="Green" />
</Trigger>
<Trigger Property="Border.IsMouseOver" Value="False">
<Setter Property="Border.Background" Value="Blue" />
</Trigger>
</Border.Triggers>
<TextBlock
HorizontalAlignment="Center"
VerticalAlignment="Center"
Text="X" />
</Border>
How can one set a trigger or events for MouseOver?
如何为 MouseOver 设置触发器或事件？
回答by Grokys
Yes, this is confusing...
是的，这令人困惑......
According to this blog post, it looks like this is an omission from WPF.
根据这篇博客文章，看起来这是 WPF 的一个遗漏。
To make it work you need to use a style:
要使其工作，您需要使用一种样式：
<Border Name="ClearButtonBorder" Grid.Column="1" CornerRadius="0,3,3,0">
<Border.Style>
<Style>
<Setter Property="Border.Background" Value="Blue"/>
<Style.Triggers>
<Trigger Property="Border.IsMouseOver" Value="True">
<Setter Property="Border.Background" Value="Green" />
</Trigger>
</Style.Triggers>
</Style>
</Border.Style>
<TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" Text="X" />
</Border>
I guess this problem isn't that common as most people tend to factor out this sort of thing into a style, so it can be used on multiple controls.
我想这个问题并不常见，因为大多数人倾向于将这类东西分解为一种样式，因此它可以用于多个控件。
