小改

parkMonitor/DataBase/DBConnectionPool.cs

@@ -135,7 +135,6 @@ namespace parkMonitor.DataBase
             bool result = true;
             if (conn != null)
             {
-                string sql = "select garageFreeSpace from garage where garageID = '"+ ParkingSpaceManager.garageID+ "'";
                 string sql = "select garageFreeSpace from garage where garageID = '1'";
                 MySqlCommand cmd = new MySqlCommand(sql, conn);
                 try