public VendorCriteriaViewModel(VendorCriteriaElement view)
 {
     _view                    = view;
     CbVendorOpeItems         = ApplicationContext.CbVendorOpeItems;
     CbVendorOpeSelected      = CbVendorOpeItems.Count > 0? CbVendorOpeItems[0]:"";
     CbVendorCriteriaItems    = ApplicationContext.CbVendorCriteriaItems;
     CbVendorCriteriaSelected = CbVendorCriteriaItems.Count > 0 ? CbVendorCriteriaItems[0] : "";
 }
 public VendorCriteriaViewModel(VendorCriteriaElement view, bool isVisibleBtn) : this(view)
 {
     BtnAddVisible = isVisibleBtn;
 }