.net - WinForms drag and drop to rearrange multiple items in ListView -

i can't figure out how allow multiple items rearranged in listview. how handle 1 item:

    protected override void ondragdrop(drageventargs drgevent)     {             //get target index , other things              if (drgevent.data.getdatapresent(typeof(listviewitem)))             {                 listviewitem draggeditem = (listviewitem)drgevent.data.getdata(typeof(listviewitem));                 int origindex = draggeditem.index;                 if (origindex != targetindex)                 {                     var e = new rearrangeitemeventargs(origindex, targetindex);                     onrearrangeitem(e);                 }             }     } 

but after enabling multiselect, drgevent.data still contains listviewitem (and windowsforms10persistentobject, have no idea is).

i expected contain selectedlistviewitemcollection, listviewitemcollection, or listviewitem[], none of them worked.

so how selected items, , not 1 of them?