public static string ParseWebContent(string Url)
 {
     var web = new HtmlWeb();
     var document = web.Load(Url);
     var page = document.DocumentNode;
     using(var db = new TheFishEntities())
     { //loop through all div tags with item css class
         db.Database.ExecuteSqlCommand("TRUNCATE TABLE FdaCalendar");
         foreach(var item in page.QuerySelectorAll("table.sortable>tbody>tr"))
         {
             var i = 0;
             var calendar = new CatchTheFish.DbEntities.FdaCalendar();
             foreach(var subItem in item.QuerySelectorAll("td"))
             {
                 var str = subItem.InnerText;
                 switch(i)
                 {
                     case 0:
                         calendar.Symbol = str;
                         break;
                     case 1:
                         decimal price;
                         Decimal.TryParse(str, System.Globalization.NumberStyles.AllowDecimalPoint, null, out price);
                         calendar.Price = price;
                         break;
                     case 2:
                         calendar.MarketCapital = str;
                         break;
                     case 3:
                         calendar.Type = str;
                         break;
                     case 4:
                         DateTime dt;
                         if(DateTime.TryParse(str, out dt))
                         {
                             calendar.CatalystDate = dt;
                         }
                         break;
                     case 5:
                         calendar.CatelystNotes = str;
                         break;
                 }
                 i++;
             }
             calendar.LastMoidfiedDate = DateTime.Now;
             db.FdaCalendars.Add(calendar);
             db.SaveChanges();
         }
     }
     return "";
 }
        public static void ScanStocks()
        {
            //Log.Error(typeof(CollectDataManager), "Test 1");
            //Log.Error(typeof(CollectDataManager),"Test tets");
            //Log.Error(typeof(CollectDataManager), "Test tets 123", new Exception("Failed to test"));
            var engine = new YahooStockEngine();

            var quoteList = new ObservableCollection<Quote>();
            var boList = new List<CompanyList>();
            using(var db=new TheFishEntities())
            {
                 boList = db.CompanyLists.Where(x=>x.Sector.Equals("Health care",StringComparison.OrdinalIgnoreCase) && x.Symbol.Length<5 ).ToList();
            }

            int i = 1;
            var quoteSingleCollectionChunk = new List<Quote>();
            foreach(var item in boList)
            {
                //if (i > 2)
                //    break;
                try
                {

                    var quote = new Quote(item.Symbol.Trim());
                    quoteSingleCollectionChunk.Add(quote);
                    if (i == StockFetchTrunk)
                    {
                        YahooStockEngine.Fetch(quoteSingleCollectionChunk);
                        //YahooStockDownoader.GetQuote(quoteSingleCollectionChunk);
                        foreach (var stockInfo in quoteSingleCollectionChunk)
                            quoteList.Add(stockInfo);
                        quoteSingleCollectionChunk = new List<Quote>();
                        i = 1;
                    }
                    i++;
                }catch(Exception ex)
                {
                    var message = ex.Message;
                }
                //i++;
            }

            try
            {
                if (quoteSingleCollectionChunk.Count > 0)
                {
                    YahooStockEngine.Fetch(quoteSingleCollectionChunk);
                    //YahooStockDownoader.GetQuote(quoteSingleCollectionChunk);
                    foreach (var stockInfo in quoteSingleCollectionChunk)
                        quoteList.Add(stockInfo);
                }
            }catch(Exception ex)
            {
                var message = ex.Message;
            }

            DateTime today = DateTime.Today;                    // earliest time today
            DateTime tomorrow = DateTime.Today.AddDays(1);      // earliest time tomorrow

            using (var db = new TheFishEntities())
            {
                foreach(var item in quoteList.ToList())
                {
                    try
                    {
                        var result = StockAnalyzer.AnalyzeStock(item);
                        var isPriceChangeFish = result.IsPriceChangedDramatically;
                        var isVolumeChangeFish = result.IsVolumeAbnormal;
                        var isPrice52WeeksLow = result.IsPrice52WeeksLow;
                        if (!(isPriceChangeFish || isVolumeChangeFish || isPrice52WeeksLow))
                            continue;
                        if (
                            db.CaughtFish.Where(
                                x => x.Symbol.Equals(item.Symbol) && x.WhenCreated > today && x.WhenCreated < tomorrow)
                              .Any())
                            continue;
                        var caughtFish = new CaughtFish();
                        caughtFish.Symbol = item.Symbol;
                        caughtFish.WhenCreated = DateTime.Now;
                        caughtFish.Price = item.LastTradePrice;
                        caughtFish.PriceChangePercentage = item.ChangeInPercent;
                        caughtFish.Volume = item.Volume;
                        if (item.AverageDailyVolume > 0 && item.Volume > 0)
                            caughtFish.VolumeChangePercentage =
                                (int) (0.5M + 100M*(item.Volume - item.AverageDailyVolume)/item.AverageDailyVolume);
                        var message = "";
                        var subject = "";
                        if (isPriceChangeFish)
                        {
                            caughtFish.FishType = 0;
                            message = string.Format(MessageText, "Price Change Alert -- ", caughtFish.Symbol,
                                                    caughtFish.Price.ToString(),
                                                    caughtFish.PriceChangePercentage.ToString(),
                                                    caughtFish.Volume.ToString(), caughtFish.VolumeChangePercentage);
                            subject = " Price Drop Alert -- " + caughtFish.Symbol;
                        }
                        else if (isVolumeChangeFish)
                        {
                            caughtFish.FishType = 1;
                            message = string.Format(MessageText, "Volume Change Alert -- ", caughtFish.Symbol,
                                                    caughtFish.Price.ToString(),
                                                    caughtFish.PriceChangePercentage.ToString(),
                                                    caughtFish.Volume.ToString(),
                                                    caughtFish.VolumeChangePercentage.ToString());
                            subject = " Volumne Change Alert -- " + caughtFish.Symbol;
                        }
                        else if (isPrice52WeeksLow)
                        {
                            caughtFish.FishType = 1;
                            message = string.Format(MessageText, "52 Weeks low price Alert -- ", caughtFish.Symbol,
                                                    caughtFish.Price.ToString(),
                                                    caughtFish.PriceChangePercentage.ToString(),
                                                    caughtFish.Volume.ToString(),
                                                    caughtFish.VolumeChangePercentage.ToString());
                            subject = " 52 Weeks Low Alert -- " + caughtFish.Symbol;
                        }
                        db.CaughtFish.Add(caughtFish);
                        db.SaveChanges();
                        Messaging.SendEmailGmail(subject, MessageDetail.GetMessageDetail(item));
                    }
                    catch (Exception ex)
                    {
                        StaticLog.Error(ex);
                    }
                }
            }
        }