WPF ComboBox 弹出位置:底部并与右边缘对齐 [英] WPF ComboBox popup placement : Bottom and aligned to the right edge
问题描述
我正在尝试创建一个具有非标准下拉对齐方式的 ComboBox
.基本上,我希望下拉菜单位于 ComboBox
下方,但与 ComboBox
的右边缘对齐,而不是左边缘.
I'm trying to create a ComboBox
with a non-standard dropdown alignment. Basically, I want the dropdown to be below the ComboBox
, but aligned with the right edge of the ComboBox
instead of the left edge.
使用 PlacementMode="Bottom"
的普通 ComboBox
是什么样子:
What a normal ComboBox
looks like, using PlacementMode="Bottom"
:
我想要的:
我尝试在我的 ComboBox
的模板中使用 Popup.PlacementMode
属性,但似乎没有一个可能的值符合我的要求.有没有一种简单的方法可以做到这一点,最好是在纯 XAML 中?
I tried to play with the Popup.PlacementMode
property in the template of my ComboBox
, but none of the possible values seem to do what I want. Is there a simple way to do it, preferably in pure XAML?
推荐答案
当我打开 Expression Blend 时,我在几秒钟内就想出了解决方案:
When I opened Expression Blend, I have come up with the solution within a few seconds:
<Popup Placement="Left" VerticalOffset="{TemplateBinding ActualHeight}"
HorizontalOffset="{TemplateBinding ActualWidth}"
有时这个应用程序比手工编写 xaml 更有用,但不是那么频繁.
Sometimes this application is more useful than writing xaml by hands, but not so often.
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