We
validated the shared requirement. It is not possible to have drag and drop
(reorder) values in the dropdown list component. if you click on the dropdown
list item, the value is selected and updated in the input box. Also, we have
sortOrder
API, but using this
API you can only sort the values either in ascending or descending order.
API:
https://ej2.syncfusion.com/angular/documentation/api/drop-down-list/#sortorder
Hence we suggest you use the Listbox component which has support to
drag an item or a group of selected items and drop it within the same list box.