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ÏÂÃæÕâ¶Î´úÂëÊÇÏëʵÏÖ¶ÁÈ¡Êý¾Ý¿â±íÖеĻõ±Ò×Ö¶Îmoney£¬ ²¢½øÐиüУ¬µ«Êǵ÷ÊÔʱ×ÜÔÚ¶ÁÈ¡moneyʱ³ö´í£¨»ÆÉ«´¦£©£¬´ó¼Ò°ïæ¿´¿´£¬Ð»Ð»ÁË~~
db1.oleDbConnection1.Open();
  OleDbCommand cmd = new OleDbCommand("select lb.Account,money,LendDate from lb,reader where lb.Account=reader.[account]",db1.oleDbConnection1 );
  OleDbDataReader dr = cmd.ExecuteReader();
  while (dr.Read())
  {
  DateTime t_m = dr.GetDateTime(2);
  string money_m =dr.GetString (1); string account_m=dr.GetString (0);
  DateTime t_now = DateTime.Now;
  int days = DateDiff(t_m ,t_now );
  if (days > 30)
  {

  string fee = Convert.ToString((days - 30) * 0.1 + money_m);
  OleDbCommand cmd1= new OleDbCommand(string .Format ("update reader set money ='{0}' where [account]='{1}' ",fee,account_m ), db1.oleDbConnection1);
  cmd1.ExecuteNonQuery();

  }
  }
  dr.Close();
  db1.oleDbConnection1.Close();
»ÆÉ«´¦±¾ÊÇ double money_m =dr.Getdouble (1);Õ³´íÁË¡­¡­

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