static void Main(string[] args) { StockData stocks = new StockData(); stocks.InsertUpdateStocks("9:30:45:989 AM", "140"); stocks.InsertUpdateStocks("9:40:00:000 AM", "100"); stocks.InsertUpdateStocks("9:40:10:100 AM", "101"); stocks.InsertUpdateStocks("9:40:10:200 AM", "109"); stocks.InsertUpdateStocks("9:40:10:300 AM", "102"); stocks.InsertUpdateStocks("9:40:10:400 AM", "103"); stocks.InsertUpdateStocks("9:40:10:500 AM", "104"); stocks.InsertUpdateStocks("9:40:10:600 AM", "105"); stocks.InsertUpdateStocks("9:40:10:700 AM", "106"); stocks.InsertUpdateStocks("9:40:10:800 AM", "107"); stocks.InsertUpdateStocks("9:40:10:900 AM", "108"); string output = stocks.GetStockPrices("9:40:00:000 AM"); stocks.InsertUpdateStocks("9:50:00:000 AM", "130"); stocks.InsertUpdateStocks("10:00:00:000 AM", "1070"); stocks.InsertUpdateStocks("10:15:00:000 AM", "110"); stocks.InsertUpdateStocks("10:20:45:589 AM", "160"); stocks.InsertUpdateStocks("10:30:00:000 AM", "150"); output = stocks.GetStockPrices("10:15:00:000 AM"); stocks.InsertUpdateStocks("10:40:00:000 AM", "120"); stocks.InsertUpdateStocks("12:40:00:000 PM", "1020"); stocks.InsertUpdateStocks("9:40:00:000 AM", null); output = stocks.GetStockPrices("9:51:00:000 AM"); stocks.InsertUpdateStocks("1:40:00:000 PM", "1420"); stocks.InsertUpdateStocks("2:40:00:000 PM", "1920"); stocks.InsertUpdateStocks("02:41:00:000 PM", "1980"); output = stocks.GetStockPrices("02:41:00:000 PM"); Console.ReadLine(); }