Need Suggestion for Live Data

[vksingh24]

Hi,

I want to write a small desktop application which will fetch Live stock price from NSE/BSE or Yahoo finance website. In order to create such application I need the guidance that how shoudl I proceed with?

The major problem I am facing is connecting a desktop application with intenet and fetching records.

Any help or guidenace is appreciated

[sknake]

This should get you started:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Web;
using System.Xml;
using System.Net;
using System.IO;


namespace daniweb
{
  public partial class frmStockRSS : Form
  {
    public frmStockRSS()
    {
      InitializeComponent();
    }

    private static StockInfo GetStockInfo(string StockTicker)
    {
      if (string.IsNullOrEmpty(StockTicker))
        return null;

      const string yhoo_url = @"http://download.finance.yahoo.com/d/quotes.csv?s={0}&f=sl1d1t1c1ohgv&e=.csv";
      string url = string.Format(yhoo_url, HttpUtility.UrlEncode(StockTicker.ToUpper()));
      HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(url);
      req.Method = "GET";
      req.Referer = string.Empty;
      
      HttpWebResponse objResponse = (HttpWebResponse)req.GetResponse();
      string resp = default(string);
      try
      {
        using (StreamReader sr = new StreamReader(objResponse.GetResponseStream()))
        {
          resp = sr.ReadToEnd();
          sr.Close();
        }
      }
      catch (HttpException)
      {
        return null;
      }
      catch (IOException)
      {
        return null;
      }

      StockInfo result = StockInfo.FromYahoo(resp);
      return result;
    }

    private void button1_Click(object sender, EventArgs e)
    {
      StockInfo info = GetStockInfo("GOOG");
      Console.WriteLine(info.Ticker + ": " + info.LastTrade);
      info = GetStockInfo("YHOO");
      Console.WriteLine(info.Ticker + ": " + info.LastTrade);
    }
  }
  public class StockInfo
  {
    private string _ticker;
    private decimal _lastTrade;
    private DateTime _tickerTime;
    private decimal _change;
    private decimal _open;
    private decimal _high;
    private decimal _low;
    private int _unknown;

    public string Ticker
    {
      get { return _ticker; }
      set { _ticker = value; }
    }
    public decimal LastTrade
    {
      get { return _lastTrade; }
      set { _lastTrade = value; }
    }
    public DateTime TickerTime
    {
      get { return _tickerTime; }
      set { _tickerTime = value; }
    }
    public decimal Change
    {
      get { return _change; }
      set { _change = value; }
    }
    public decimal Open
    {
      get { return _open; }
      set { _open = value; }
    }
    public decimal High
    {
      get { return _high; }
      set { _high = value; }
    }
    public decimal Low
    {
      get { return _low; }
      set { _low = value; }
    }
    public int Unknown
    {
      get { return _unknown; }
      set { _unknown = value; }
    }
    private StockInfo()
    {
    }
    public static StockInfo FromYahoo(string s)
    {
      if (string.IsNullOrEmpty(s))
        return null;
      s = s.Replace("\"", string.Empty);

      string[] vals = s.Split(new char[] { ',' }, StringSplitOptions.None);
      if (vals.Length != 9)
        return null;

      StockInfo result = new StockInfo();
      result.Ticker = vals[0];
      result.LastTrade = Convert.ToDecimal(vals[1]);
      result.TickerTime = Convert.ToDateTime(vals[2] + " " + vals[3]); //This is very unsafe.
      result.Change = Convert.ToDecimal(vals[4]);
      result.Open = Convert.ToDecimal(vals[5]);
      result.High = Convert.ToDecimal(vals[6]);
      result.Low = Convert.ToDecimal(vals[7]);
      result.Unknown = Convert.ToInt32(vals[8]); //dont know what this is

      return result;
    }
  }
}

Results in:

GOOG: 547.96
YHOO: 15.90