kendo grid : Generate RowIndex column on sort event

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Javascript

jQuery

Kendo

I bind the Kendo grid with local data. and set virtual paging true. I bound one column with RowIndex it's just plain rowindex to find the position of data in datasource as below

RowIndex | Name | City
0 | John | USA
1 | Aeron | UK
2 | Mathew | Japan

So if I select any of records I got the exact RowIndex of that record of datasource array.

Issue: Now if I sort the Name column then RowIndex of column will not change because its fixed but I want to regenerate the RowIndex sequence on each sort so I got the exact sequence number to process that item further.