Extremly slow scrolling on UWP and crashing always within 1 min of usage

Question

Hello, I have created simple screen containing only 1 control :

<syncfusion:SfTimePicker Format="H_mm"

ShowHeader="False"

EnableLooping="True"

ShowColumnHeader="False">

</syncfusion:SfTimePicker>

Wanted to scroll hours from 14 to 23 and it did take > 20 seconds even though i was scrolling on touchpad all the time. See attached video.

Other issue is the crash that happens always when scrolling (usually 1st minute of using the control) :

System.ArgumentOutOfRangeException: Specified argument was out of the range of valid values.

Parameter name: index

at System.Runtime.InteropServices.WindowsRuntime.VectorToListAdapter.Indexer_Get[T](Int32 index)

at Syncfusion.UI.Xaml.Controls.Input.PickerPanel.PickerPanel_PointerWheelChanged(Object sender, PointerRoutedEventArgs e)

at Windows.ApplicationModel.Core.UnhandledError.Propagate()

at Microsoft.AppCenter.Utils.ApplicationLifecycleHelper.<.ctor>b__17_1(Object sender, UnhandledErrorDetectedEventArgs eventArgs)

--- End of stack trace from previous location where exception was thrown ---

at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()

at Microsoft.AppCenter.Utils.ApplicationLifecycleHelper.<.ctor>b__17_1(Object sender, UnhandledErrorDetectedEventArgs eventArgs)

Attachment: Handyman_20220126_113150_5cb0d56a.zip

Suganya Sethuraman · Accepted Answer

Hi Branislav,Since we are unable to reproduce the issue “Extremly slow scrolling on UWP and crashing always within 1 min of usage” in SfTimePicker, we would like you to check the issue with the attached sample and let us know if it is reproduced. Else, please revert to us by modifying the sample based on your application and provide the replication procedure or the sample. It will be helpful for us to provide a better solution at the earliest.Sample: https://www.syncfusion.com/downloads/support/directtrac/general/ze/TimePicker_Sample-475891501 Video:  https://www.syncfusion.com/downloads/support/directtrac/general/ze/TimePicker_Video1177227581 Regards,Suganya Sethuraman.

Branislav Malovec · Answer

Thanks a lot. Seems the problem is that we're running on quite old SF version. When i upgraded to newest then scrolling was much faster. It was still not entirely fluent though but much better.

Suganya Sethuraman · Answer

Hi Branislav,Please use the most recent SfPicker NuGet package. In the future, we will investigate options to improve the smooth scrolling.Regards,Suganya Sethuraman.