Multiselect with virtualization

[Manoj]

Can you please share example for "selectable: 'multiselect'" with virtualization enabled for grid. The page size is 50. if data is more than 1000 rows, if user selects all the 1000 rows then select() method always returns 10-55 rows randomly. Also how to maintain the selection with scroll. since grid renders only current page.

[Alexander Valchev]

Hi Manoj,

Check this how to example as it demonstrates how to maintain the selected items during paging (virtualization uses paging).

• http://docs.telerik.com/kendo-ui/controls/data-management/grid/how-to/Selection/persist-row-selection-while-paging

Regards,
Alexander Valchev
Telerik

 

 

[Manoj]

Thanks..but the example you shared only demonstrates the pagination....but pagination with virtualization does not have all the rows rendered in the grid. so if there are 1000 rows in a grid (with page size 100) and user selects 1st row and then shift click 1000th row. then there should be a way to get all the selected rows. I think current implementation is based on class "k-state-selected" and it does not return the rows which are not in the current view. can you please share an example of pagination with virtualization with 1000 rows and page size of 100 and user can select all the rows using shift+click?

[Alexander Valchev]

Hi Manoj,

The idea of the virtualization is to render the rows on demand. Rendering all rows will slow down the Grid or even crash the application if there are too many rows.

If you use the approach demonstrated in the "how to" example which I provided you will have the IDs of the selected records (the `selectOrders` array). It is not possible to get all the <tr> elements, it is possible to store the data records or their IDs.

Regards,
Alexander Valchev
Telerik