Followed below way to get row data. Not sure if this is the optimal way to achieve it.
All grids were starting with similar id.
{ text: '', dataField: 'button', width: '8%', columntype:'button', cellsrenderer: function () {
return 'Enter';
}, buttonclick: function (row, event) {
var button = $(event.currentTarget);
var grid = button.parents("[id^=jqxGrid]");
var rowData = grid.jqxGrid('getrowdata', row);
}
}