Kendo Grid: Virtual Scrolling and Grouping

[Brice]

Stackoverflow: https://stackoverflow.com/questions/45439666/kendo-grid-virtual-scrolling-and-grouping

[Dimiter Topalov]

Hi Brice,

The virtual scrolling functionality is currently not supported for grouped data, but this feature is under development, and you can expect it in an upcoming Grid package release, when it is ready and properly tested.

Thank you for the understanding.

Regards,
Dimiter Topalov
Progress Telerik

[Roger]

Any word on this? I didn't realize grouping was going to have this negative effect on larger datasources needing virtual scrolling until it was too late.

Someone else is saying it's not actually in development.
https://www.telerik.com/forums/limitations-of-virtual-scrolling

[Dimiter Topalov]

Hello Roger,

You can use virtual scrolling in combination with grouped data by utilizing the kendoGridGroupBinding directive. The directive supports only the processing of in-memory data and you have to provide the full set of data that will be processed:

https://www.telerik.com/kendo-angular-ui/components/grid/scroll-modes/#toc-using-virtualization-with-grouping

The limitation regarding this functionality is that it needs all data to be available on the client so that it can be processed properly during grouping and scrolling.

I hope this helps.

Regards,
Dimiter Topalov
Progress Telerik

[Roger]

HI Dimiter,

These directive links are pointing to Kendo UI for Angular.  We're using the Kendo UI for JQuery, though we are using it with Angular 1.  We are at least sending all of the data to the client to be processed.  So it sounds like we're on the right track.  Has the same support been introduced to Kendo UI for Angular?

[Dimiter Topalov]

Hi Roger,

Thank you for the clarification. As the initial question in this thread was for the Kendo UI for Angular Grid I assumed the same for your question too.

Virtual scrolling with grouping is not supported in the jQuery version of the Grid, but now there is an endless scrolling functionality that works together with grouping. You can find further details and examples in the following resources:

https://docs.telerik.com/kendo-ui/controls/data-management/grid/appearance#endless-scrolling

https://demos.telerik.com/kendo-ui/grid/endless-scrolling-local

https://demos.telerik.com/kendo-ui/grid/endless-scrolling-remote

I hope this helps.

Regards,
Dimiter Topalov
Progress Telerik