写入Access数据库的问题

都试过用update,但还是一样

System::String ^strCon ="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=c:\\weather_report.mdb";
            
            //System::String ^ strCom =  "INSERT INTO weather_report (Day, time, city, weather，temp，wind)  VALUES ('000','000','000','000','000','000')";
            
            System::String ^ strCom =  ""UPDATE weather_report SET city = 'Engineering'";
            OleDbConnection^ myConn = gcnew OleDbConnection(strCon);

          // OleDbCommand^insertcommand=gcnew OleDbCommand(strCom,myConn);

        
           myConn->Open();
           //insertCommand->ExecuteNonQuery();

          OleDbConnection^UpdataCommand1=gcnew OleDbConnection(strCom,myConn);
          
           myConn->Close();

写入数据库记得是
update,或者是insert into