/// <summary>
/// Populate the Nasdaq combox so that we have a list of nasdaq companies to choose from
/// </summary>
private void populateNasdaqComboBox()
{
aStock nasdaq = new aStock();
string url = "http://www.nasdaq.com/screening/companies-by-industry.aspx?exchange=NASDAQ&render=download";
//Save nasdaq information to the computer
nasdaq.ReadFromURL(url);
//Populate the ticker combobox
string nasdaqFilePath = @"C:\DEV\STOCKDATA\NASDAQ\companylist.csv";
string[] lines = File.ReadAllLines(nasdaqFilePath);
string removeHeader = "\"Symbol\",\"Name\",\"LastSale\",\"MarketCap\",\"ADR TSO\",\"IPOyear\",\"Sector\",\"Industry\",\"Summary Quote\",";
string removeWhiteSpace = "";
lines = lines.Where(val => val != removeHeader).ToArray();
lines = lines.Where(val => val != removeWhiteSpace).ToArray();
foreach (var line in lines)
{
string[] ticker = line.Split(',', '"');
cbCompanyTicker.Items.Add(ticker[1]);
}
}
/// <summary>
/// Submit button to get query based on the user options provided in the form
/// </summary>
private void btnSubmit_Click(object sender, EventArgs e)
{
aStock stock = new aStock(resolution, startingDate, endingDate, ticker);
if (rbOnline.Checked == true)
{
// clear list view
lsvStock.Items.Clear();
//************************************
//Pull from yahoo and save to computer
//************************************
// create url from ticker information
URL = createURL(ticker, resolution,
startingDate.Day.ToString(), startingDate.Month.ToString(), startingDate.Year.ToString(),
endingDate.Day.ToString(), endingDate.Month.ToString(), endingDate.Year.ToString());
// return data from Yahoo query url
stock.ReadFromURL(URL);
// populate list view with data!
// read from file
List <aCandlestick> stockInformation = stock.ReadFromFile(ticker);
// read somewhere that this helps with speed
// http://stackoverflow.com/questions/9008310/how-to-speed-adding-items-to-a-listview
lsvStock.BeginUpdate();
foreach (var line in stockInformation)
{
// add each element as a list view item (subitem)
ListViewItem element = new ListViewItem(line.StartingDate.ToShortDateString()); // date
element.SubItems.Add(line.Open.ToString()); //open
element.SubItems.Add(line.High.ToString()); //high
element.SubItems.Add(line.Low.ToString()); //low
element.SubItems.Add(line.Close.ToString()); //close
element.SubItems.Add(line.Volume.ToString()); //volume
lsvStock.Items.Add(element);
}
// stop updating list view
lsvStock.EndUpdate();
// auto resize columns
for (int i = 0; i < lsvStock.Columns.Count - 1; i++)
{
lsvStock.AutoResizeColumn(i, ColumnHeaderAutoResizeStyle.ColumnContent);
}
// show list view
lsvStock.Visible = true;
// tell user the data has been downloaded
//MessageBox.Show("Data from " + ticker + " was downloaded!");
}
else if (rbDisplay.Checked == true)
{
List <aCandlestick> stockInformation = stock.ReadFromFile(ticker);
CandlestickForm modelessWindow = new CandlestickForm(stockInformation, ticker, resolution, startingDate, endingDate);
modelessWindow.Show();
}
}
