winforms - C# ListView DragDrop Reordering not working -

im trying implement dragdrop of listviewitems re-order list.

the list not re-order or move items expected.

code

    private void lstmodules_dragdrop(object sender, drageventargs e)     {         if (e.data.getdatapresent(typeof(listviewitem)))         {             lstmodules.alignment = listviewalignment.default;             if (lstmodules.selecteditems.count == 0)                 return;              var p = lstmodules.pointtoclient(new system.drawing.point(e.x, e.y));              listviewitem movetonewposition = lstmodules.getitemat(p.x, p.y);              if (movetonewposition == null)                  return;              listviewitem droptonewposition = (e.data.getdata(typeof(listview.selectedlistviewitemcollection)) listview.selectedlistviewitemcollection)[0];             listviewitem clonetonew = (listviewitem)droptonewposition.clone();              int index = movetonewposition.index;             lstmodules.items.remove(droptonewposition);             lstmodules.items.insert(index, clonetonew);              lstmodules.alignment = listviewalignment.snaptogrid;           }      }       private void lstmodules_dragenter(object sender, drageventargs e)     {          if (e.data.getdatapresent(typeof(listview.selectedlistviewitemcollection)))         {             e.effect = dragdropeffects.move;         }      }       private void lstmodules_itemdrag(object sender, itemdrageventargs e)     {         lstmodules.dodragdrop(lstmodules.selecteditems, dragdropeffects.move);     } 

recently have done code try this.

private listviewitem tempitem = null; private void lvtables_mousedown(object sender, mouseeventargs e) {     if (e.button == mousebuttons.left)     {         application.doevents();         tempitem = lvtables.getitemat(e.x, e.y);         string sdata = tempitem.text + ":" + tempitem.name;         dragdropeffects effect = dodragdrop(sdata, dragdropeffects.move);         lvtables.refresh();     }        }  private void lvtables_dragenter(object sender, drageventargs e) {      if (e.data.getdatapresent(dataformats.stringformat))         e.effect = dragdropeffects.move;     else         e.effect = dragdropeffects.none; }  private void lvtables_dragover(object sender, drageventargs e) {     if (tempitem != null && lvtables.items.contains(tempitem))     {         application.doevents();         int iindex = -1;         try         {             point p = lvtables.pointtoclient(new point(e.x, e.y));             iindex = lvtables.getitemat(p.x, p.y).index;         }         catch         { }         if (iindex > -1 && iindex != tempitem.index)         {             if (lvtables.items.contains(tempitem))                 lvtables.items.remove(tempitem);             lvtables.items.insert(iindex, tempitem);             tempitem.selected = true;         }     } }  private void lvtables_mouseup(object sender, mouseeventargs e) {     if (tempitem != null)     {         lvtables.selecteditems.clear();         tempitem.selected = true;         tempitem = null;     } }