/// <summary>
/// Updates the price history for all tickers in the database.
/// </summary>
private void UpdateAllTickers()
{
List<Stock> stocks;
using (var context = new StockScreenerEntities())
{
stocks = context.Stocks.ToList();
}
var dataUpdater = new DataUpdater();
dataUpdater.UpdateTickerHistories(stocks);
Console.ReadLine();
}
/// <summary>
/// Updates the price history for tickers in a watch list.
/// </summary>
private void UpdateTickersInWatchList()
{
// First, print a list of watch lists for the user to choose from.
this.DisplayWatchLists();
// Prompt the user to select the watch list that will be updated with new data.
Console.Write("Select ID of watch list to update. ([Blank] to cancel.) --> ");
var input = Console.ReadLine();
if (string.IsNullOrWhiteSpace(input))
{
// The user opted to cancel without entering an ID.
Console.WriteLine();
return;
}
int id;
if (!int.TryParse(input, out id))
{
// Invalid Input -- non-numeric data!!!
Console.WriteLine("Invalid input...no watch list was updated.");
Console.WriteLine();
return;
}
using (var context = new StockScreenerEntities())
{
var watchLists = context.Watchlists.ToList();
if (watchLists.Count(list => list.ID == id) <= 0)
{
// Invalid Input -- invalid Watch List ID!!!
Console.WriteLine("Invalid input...no watch list was upated.");
Console.WriteLine();
}
else
{
// Valid Input -- Update the selected watch list.
var dataUpdater = new DataUpdater();
dataUpdater.UpdateTickerHistories(watchLists.First(list => list.ID == id).Stocks);
}
}
}
/// <summary>
/// Repopulates the list of tickers in the database from the CSV files downloaded from NASDAQ's website.
/// </summary>
private void RepopulateTickersInDatabase()
{
const string NyseFile = @"TickerLists\NyseCompanyList.csv";
const string NasdaqFile = @"TickerLists\NasdaqCompanyList.csv";
if (!File.Exists(NyseFile))
{
Console.WriteLine("Error! Cannot find the file containing the list of NYSE stocks (" + NyseFile + ").");
Console.WriteLine("No tickers were updated.");
Console.WriteLine();
return;
}
if (!File.Exists(NasdaqFile))
{
Console.WriteLine("Error! Cannot find the file containing the list of NASDAQ stocks (" + NasdaqFile + ").");
Console.WriteLine("No tickers were updated.");
Console.WriteLine();
return;
}
// Create a list of stocks currently listed on the NYSE and NASDAQ
var currentStocks = this.ReadStockListForExchange("NYSE", NyseFile);
currentStocks.AddRange(this.ReadStockListForExchange("NASDAQ", NasdaqFile));
// Update the database with the list of current stocks.
var dataUpdater = new DataUpdater();
dataUpdater.MakeDbStockListCurrent(currentStocks);
}