抓数据

做过股票的人都知道要选一个好股票往往要用到技术指标选股，而有时自己会有一些想法，想用其来挑选股票，并用历史数据进行校验，必须要有每日的数据，下面是我自己写的一个抓数据的C#代码。

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;

namespace 股票技术分析
{
    public partial class Form3 : Form
    {
        string conn = System.Configuration.ConfigurationManager.ConnectionStrings["BusinessConnString"].ConnectionString;
        string stockcode = "";
        DataTable dt;
        int Count = 0;
        string beginday;
        string endday;
        public Form3()
        {
            InitializeComponent();
        }

        private void Form3_Load(object sender, EventArgs e)
        {
            DataSet ds = Platform.Data.SqlHelper.ExecuteDataset(conn, CommandType.Text, "select * from StockCodeInformation where IsActive=0 order by stockcode");
            dt = ds.Tables[0];
            stockcode = dt.Rows[0]["stockcode"].ToString();

            beginday = (1991 ).ToString() + "-01-01";
            endday = (1991 ).ToString() + "-12-31";
            webBrowser1.Url = new Uri(@"http://app.finance.ifeng.com/hq/stock_daily.php?code=" + stockcode + "&begin_day=" + beginday + "&end_day=" + endday);
        }

        private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
        {
            string sql = "update StockCodeInformation set IsActive=1 where stockcode = '" + stockcode + "'";
            Platform.Data.SqlHelper.ExecuteNonQuery(conn, CommandType.Text, sql);                       

            if (Count < dt.Rows.Count)
            {
                Count++;
                stockcode = dt.Rows[Count]["stockcode"].ToString();
                webBrowser1.Url = new Uri(@"http://app.finance.ifeng.com/hq/stock_daily.php?code=" + stockcode + "&begin_day=" + beginday + "&end_day=" + endday);
            }
        }
    }
}