[Solved] Row index with Insert, Delete, Update

[Quang]

Hi there!
I created a column row index with code below:

//column rowindex
columns.Template(o => o.RowIndex).Title("No.").ClientTemplate("<#= ++index #>")

//ondatedinding event
function onDataBinding() {
        var grid = $('#GridBusTripEmp').data('tGrid')
        index = (grid.currentPage - 1) * grid.pageSize;
    }

this code is only right when i used for Grid only listing. but it is wrong with Insert,Delete,Update.

how to do it right?

Thanks for support.