how to select single column data in infragistics igniteui grid

how to select single column data in infragistics igniteui grid

how to select data of single column from a grid data. The grid data is
passed as following:
var url = "/Main/Grid?tbname="+parameter;
var jsonp = new $.ig.JSONPDataSource({
dataSource: url, paging: {
enabled: true, pageSize: 10,
type: "remote"
}
});
$("#listingGrid").igGrid("dataSourceObject", jsonp).igGrid("dataBind");
I have to retrieve data in another page from this grid and select one
column from this data.
and i have retrieved data like this
var ds = window.parent.$("#listingGrid").igGrid("option", "dataSource");
but not able to access one column data.