Well on each column there are a few properties to help sorting. I would recommend looking into the sortCompareType[1][2]. It allows you to force which type of sorting is used for a column.
e.g. column.sortCompareType = SortFieldCompareTypes.NUMERIC; [1] https://flex.apache.org/asdoc/spark/components/gridClasses/GridColumn.html#sortCompareType [2] https://flex.apache.org/asdoc/spark/collections/SortFieldCompareTypes.html -Mark -----Original Message----- From: Oleg Konovalov [mailto:oleg...@gmail.com] Sent: Tuesday, June 10, 2014 9:37 AM To: users@flex.apache.org Subject: Changing sort type Hi, We have a Flex4 DataGrid, which is totally dynamic, so I don't know in advance number of columns or their types. It is sorted on the first column, which we know is numeric: 1,2,3,4,... But users might want to sort on other columns, happens often, and some numeric columns contain negative numbers. So how can I set sort type dynamically, when I find out column data type, after user click to sort it. TIA, Oleg.
