WPF Scrollview Panning deceleration

Question

So official documentation does not state any "default" values on this topic. I have tried with several values like 0.01, 0.1, 1 and I can't seem to get the effect where the ScrollView keeps scrolling after an user lifts a finger.

<ScrollViewer Margin="0,210,0,66" x:Name="AboutUsScrollViewer" PanningMode="VerticalOnly" PanningDeceleration="1" PanningRatio="2" VerticalScrollBarVisibility="Hidden" VerticalAlignment="Top">
                    <Image x:Name="AboutUsMainImage" Source="Resources\o nama.png"></Image>
</ScrollViewer>

I'm not sure if these are actually device independent units, if so, how do I find the value where I can see the desired effect?

Note: the image is tall enough so there is clearly a lot of room for scrolling, this is not an issue.

Out of curiosity have you tried larger values like 10 or 100? — XAMlMAX, Sep 14 '20 at 14:39
Actually yes, I just didn't mention that. To my disappointment nothing happened. — Milos Stamenkovic, Sep 15 '20 at 15:25

score 0 · Answer 1 · answered Jun 29 '23 at 14:34

Try this

PanningDeceleration="0.001"

That extra zero makes the difference. That should work for you. Start with zero and it should flick without stopping (PanningDeceleration="0"). But with 0.001 it will flick and eventually stop on its own. Play with those numbers and you should get the effect you desire. Wish the Microsoft docs was a bit more informational on the property value it takes. But here is the DOC: PanningDeceleration

WPF Scrollview Panning deceleration

1 Answers1