NumericUpDown in ScrollViewer Touch Not Working Properly

[Nicholas]

Hi

If I place a NumericUpDown control with Windows8Touch theme in a ScrollViewer control, I can no longer hold down the plus or minus buttons to change the value.  I can only do individual clicks.

Is there anyway to get round this?

Thanks

Nick

[Kalin]

Hi Nick,

We tested the described issue with the Windows8 Touch Theme on a touch device and haven't observed any issues with the buttons. Could you please share some details about the exact scenario and the version of the controls you are using? I'm also attaching my sample project so you can check and let me know if I have missed anything here.

I'm looking forward to hearing from you.

Regards,
Kalin
Telerik

 

 

[Nicholas]

Hi

Sorry - should have attached some code!

I would like the scrollviewer setup as below, so that the scrollviewer can be scrolled by touch.  In my example, the NumericUpDown works perfectly with the mouse, but with touch, the hold to increment function is lost.

<ScrollViewer PanningMode="VerticalOnly">
            <telerik:RadNumericUpDown  />
 </ScrollViewer>

Thanks

Nick

[Nicholas]

Hi

By the way I'm using version 2014.1.331.45 of the controls.

Regards

Nick

[Kalin]

Hi Nick,

I have managed to reproduce the described issue. The up and down buttons in the NumericUpDown control are native WPF RepeatButtons and it appears that this is framework behavior as if you test the same scenario with a single RepeatButton you will observe the same behavior. It seems that the continuous touch is handled by the framework in order to perform scroll operation if you swipe up or down afterwards. In this case, I'm afraid, we cannot suggest you any workaround for that behavior.

If you have any other questions let us know.

Regards,
Kalin
Telerik

 

 

[Nicholas]

Hi Kalin

Thanks for your reply - that's what I thought was happening.

I've found a solution to the problem by implementing a custom scrollviewer from this StackOverflow post.

http://stackoverflow.com/questions/19855920/wpf-scrollviewer-consuming-touch-before-longpress

The NumericUpDown now works correctly in the Scrollviewer.

Regards

Nick

[Kalin]

Hi Nick,

Thanks for sharing the solution - we are glad you have managed to achieve the desired. If you have any other questions or concerns, do not hesitate to contact us.

Regards,
Kalin
Telerik