get item internal ID from item search

Hi All,

I have having a problem on getting the internalID of the Item from the item search result.

I am using the Item Search Row and Item Search Row Basic logic to get.
The Item Search Row Basic have a field which is internalId, but i would never get the real internal ID for the Item.

is there anyway to get the internal id of the item from the item search?

here is the code i tried to get the internal id, but failed. (in C#)

 foreach (SearchRow row in rows)                      {                          // Cast the search row to a transaction search row and grab the basic row info                          ItemSearchRow tsr = (ItemSearchRow)row;                          ItemSearchRowBasic tsrb = tsr.basic;                          string itemName = (tsrb.itemId != null) ? tsrb.itemId[0].searchValue : " ";                          SearchColumnSelectField[] itemInternalID = tsrb.internalId;                          RecordRef item_ = itemInternalID[0].searchValue;                          string itemIntID = "";                          _out.writeLn("     itemInternalID:       " + itemIntID);                            RecordRef item1 = new RecordRef();                          item1.internalId = "101026";                          item1.type = RecordType.inventoryItem;                          item1.typeSpecified = true;                          RecordRef[] recordrefs = new RecordRef[1];                          recordrefs[0] = item1;                            ItemAvailabilityFilter filter = new ItemAvailabilityFilter();                          filter.item = recordrefs;                          GetItemAvailabilityResult res = _service.getItemAvailability(filter);  //code not finished  }