event-routing

Why doesn't button click event “bubble up visual tree” to StackPanel as MSDN article states?

匆匆过客 提交于 2019-12-04 15:41:06
问题 In the MSDN article Understanding Routed Events and Commands In WPF, it states an event will bubble (propagate) up the visual tree from the source element until either it has been handled or it reaches the root element. However, in this example, when you click the button, it doesn't "bubble up the visual tree" to get handled by the parent StackPanel event , i.e. clicking on the button fires no event. Why not? What do they mean then by "bubbling up" if not this? XAML: <Window x:Class=

Why doesn't button click event “bubble up visual tree” to StackPanel as MSDN article states?

狂风中的少年 提交于 2019-12-03 09:46:06
In the MSDN article Understanding Routed Events and Commands In WPF , it states an event will bubble (propagate) up the visual tree from the source element until either it has been handled or it reaches the root element. However, in this example, when you click the button, it doesn't "bubble up the visual tree" to get handled by the parent StackPanel event , i.e. clicking on the button fires no event. Why not? What do they mean then by "bubbling up" if not this? XAML: <Window x:Class="TestClickEvents456.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http:/

How to prevent InvokeCommandAction from propagating event to parent elements?

陌路散爱 提交于 2019-11-30 06:58:15
I realised that when using an InvokeCommandAcction associated to an EventTrigger, the original event was still routing up to the parent elements until it is handled. Well, I guess it is an expected behavior. But my question is how I can mark the event as Handled so it does not propagate up through the whole UI tree? Actually, as you handle this event in a command, everything will be handled in this command, therefore it does not need to propagate. And in one corner case I found, it causes some unwanted behavior. For example, I open a new window when a user double click an element

How to prevent InvokeCommandAction from propagating event to parent elements?

守給你的承諾、 提交于 2019-11-29 06:45:45
问题 I realised that when using an InvokeCommandAcction associated to an EventTrigger, the original event was still routing up to the parent elements until it is handled. Well, I guess it is an expected behavior. But my question is how I can mark the event as Handled so it does not propagate up through the whole UI tree? Actually, as you handle this event in a command, everything will be handled in this command, therefore it does not need to propagate. And in one corner case I found, it causes