Mouse wheel not working when over ScrollViewer's child controls

c# .net wpf scrollviewer mousewheel
Rich picture Rich · Apr 17, 2009 · Viewed 10.1k times · Source

I was kind of expecting my ScrollViewer's child controls to hand the MouseWheel events back up the the ScrollViewer automatically, and that's not the case.

I have a ScrollViewer with a ListBox in it. If I manually resize the width of the ListBox to be less than the ScrollViewer, the MouseWheel works on all of the ScrollViewer but has no effect when the mouse is positioned above the ListBox.

What's the standard way to do this? Do I put an event trigger on the ListBox that fires the event on the parent? Do I handle and reroute the event in the code behind?

Answer

Kent Boogaart picture Kent Boogaart · Apr 17, 2009

The ListBox's template has a ScrollViewer in it, so that ScrollViewer will be handling the events and stopping them from propagating up the visual tree.

What exactly are you trying to achieve by having a ListBox inside a ScrollViewer? Perhaps you need to re-template the ListBox, but it's impossible to say without further info.

Related questions

C# WPF - ScrollViewer + TextBlock troubles

I have a TextBlock within a ScrollViewer that aligns with stretch to its window. I need the TextBlock to behave as the following: Resizes with window, no scrollbars When resized below a certain width the TextBlock needs to keep a …

Read More
Synchronized scrolling of two ScrollViewers whenever any one is scrolled in wpf

I have gone through the thread: binding two VerticalScrollBars one to another it has almost helped to achieve the goal but still there is something missing. It is that moving the scrollbars left-right or up-down gives expected behavior of scrolling …

Read More
Metadata file '.dll' could not be found

I am working on a WPF, C# 3.0 project, and I get this error: Error 1 Metadata file 'WORK=- \Tools\VersionManagementSystem\BusinessLogicLayer\bin\Debug \BusinessLogicLayer.dll' could not be found C:\-=WORK=- \Tools \VersionManagementSystem\VersionManagementSystem\CSC VersionManagementSystem This is …

Read More