RadGridView多列排序（Multiple Column Sorting）

Multiple Column Sorting

By default, clicking on a column triggers the sorting operation for that column prevents the other columns from being sorted. By holding down the Shift key the user can retain the sort for an existing column and the headers of other columns to add additional sorting. The screenshot below shows categories in the right-most column sorted in descending order. The products in the left most column are sorted in ascending order. Notice that the products are sorted within the categories, i.e. with "Boston Crab Meat" the first item within category id "8" and "Spegesild" that last item within category "8".

啰嗦这么多，其实很简单，多列排序，按住Shift键再去点击要排序的列即可。