Number of record set elements and number of elements

Number of record set elements and number of elements
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An empty column in the determination record set

_ Variant_t varValue; varValue = pRecordSet-> GetCollect (_ T ("class"); if (varValue. vt! = VT_NULL) {banjiStr = (LPCTSTR) _ bstr_t (varValue);} else continue;

Number of records

_ RecordsetPtr pRecordNum; numStr. format (_ T ("Select * from ClassInfo order by ID"); pRecordNum-> PutCursorLocation (adUseClient); // you can use GetRecordCount () to add this statement () obtain the number of records in the record set pRecordNum-> Open (LPCTSTR) numStr, m_pConnectionStu.GetInterfacePtr (), adOpenStatic, adLockOptimistic, adCmdText); if (pRecordNum-> adoBOF) return; else pRecordNum-> MoveFirst (); int num = pRecordNum-> GetRecordCount (); pRecordNum-> MoveLast ();