wpf scrollbar step property

Hi all

this is my issue i have a scrollbar on a window in a vb.net wpf project the smallchange value is set to 0.5 and the largechange value is set to 10 the range is from 0 to 100 (i.e. percentages in 0.5% steps).

My problem is that if i drag the slider then i get a double precision value. How can i configure this scrollbar so it increases by 0.5% steps when i drag the slider?

I know i could do it by using mouse enter, mouse move and mouse leave events in code behind but is there a parameter i can set in xaml that creates the required effect? google suggested a smooth scrolling parameter but i was unable to find this in msdn :confused:

so i guess i need to create a flag when the leftmouse buton is pressed then track changes in mouse move and finally reset the flag when the left mouse button is released? i would have thought that there was a way to do this with xaml...

ok kind of resolved this by using the scrollbar1.valuechanged event.

vb Code:

scrollbar1.value = Int(scrollbar1.value * 2) / 2

this works but every time i move the mouse the valuechanged event is called twice firstly because of the drag secondly because i have changed the value. Although the performance decrease isn't small it would be good if i could do this using another event or another way...

p.s. the mouseleftbuttonup event isn't called when the thumb is dragged and released. can i for instance use the thumb class? i would imagine that thumb is a child of scrollbar somewhere along the line.