private void DsubVP(tbl_000_H_ITEM itm)
 {
     foreach (tbl_000_H_ITEM_TABULATION_VP ivp in itm.itemVP)
     {
         itmvpbal.Delete(ivp);
     }
 }
 private void DsubVP(string itemno)
 {
     tvplist = tvpbal.GetByNo(yused, itemno);
     foreach (var v in tvplist)
     {
         tvpbal.Delete(v);
     }
 }