Hello Shubham,

I am under the impression that by “changing the column sequence” you mean that you are moving columns. If this is the case, I would recommend using the actualColumnsChanged event of the IgrDataGrid. A sample event handler for this looks like the following:

    public onActualColumnsChanged(s: IgrDataGrid, e: IgrGridColumnsChangedEventArgs){
        for(let i=0; i<e.columns.count; i++){
            let column = e.columns.item(i);
            console.log(column.field);
        }       
    }

The e.columns collection above will reflect the new order of the columns.

I hope this helps. Please let me know if you have any other questions or concerns on this matter.