test

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;


using System.Text.RegularExpressions;
using System.Collections;
using System.Collections.Generic;

using System.Net;
using System.IO;
public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            InitData();

        }
    }
    protected void btnCollect_Click(object sender, EventArgs e)
    {
        string strUrl = txtCollectionUrl.Text.Trim();
        List<string> urls = new List<string>();
        List<string> serialsStrings = new List<string>();
        Dictionary<string, string> dic = new Dictionary<string, string>();
        int iStart = 0;
        int iEnd = 0;
        if (string.IsNullOrEmpty(strUrl))
            return;

        string hasPattern = @"{*}";
        Regex reg = new Regex(hasPattern, RegexOptions.Compiled | RegexOptions.Singleline);
        if (reg.IsMatch(strUrl))
        {
            int.TryParse(txtStart.Text.Trim(), out iStart);
            int.TryParse(txtEnd.Text.Trim(), out iEnd);

            serialsStrings = GetSerialStrings(iStart, iEnd, Convert.ToInt32(ddlSimilarCount.SelectedValue));

            foreach (string var in serialsStrings)
            {
                urls.Add(strUrl.Replace(hasPattern,var));
            }
        }
        else
        {
            urls.Add(strUrl);
        }
        foreach (string var in urls)
        {
            Response.Write(var + "<br />");
        }

        foreach (string var in urls)
        {
            WebRequest request = WebRequest.Create(var);

            WebResponse response = request.GetResponse();

            Stream stream = response.GetResponseStream();
            StreamReader reader = new StreamReader(stream, System.Text.Encoding.Default);

            string strContent = reader.ReadToEnd();
            string strContentPattern = txtPrefixRule.Text + @".*?" + txtSuffixRule.Text;

            Regex regContent = new Regex(strContentPattern, RegexOptions.Compiled | RegexOptions.IgnoreCase);
            MatchCollection mc = regContent.Matches(strContent);

            foreach (Match match in mc)
            {
                //Response.Write(match.Value);
                dic["Issue"] = GetContent(match.Value, txtPrefixIssueRule.Text, txtSubffixIssueRule.Text);
                dic["Lottery"] = GetContent(match.Value, txtPrefixLotteryRule.Text, txtSubffixLotteryRule.Text);
                dic["Result"] = GetContent(match.Value, txtPrefixResultRule.Text, txtSubffixResultRule.Text);
                dic["SaleRoom"] = GetContent(match.Value, txtPrefixSaleRoomRule.Text, txtSubffixSaleRoomRule.Text);
                dic["Date"] = GetContent(match.Value, txtPrefixDateRule.Text, txtSubffixDateRule.Text);
                
            }
        }

        foreach (object var in collection_to_loop)
        {
            
        }

    }

    private string GetContent(string content, string startStr, string endStr)
    {
        string result = string.Empty;
        int indexA = content.IndexOf(startStr);
        int indexB = content.IndexOf(endStr);


        if (indexA > -1 && indexB > -1)
        {
            if (indexA > indexB)
            {
                indexB = content.IndexOf(endStr, indexA);
                //indexA = 0;
            }
            if (indexB > -1)
                result = content.Substring(indexA + startStr.Length, indexB - indexA - startStr.Length);
        }
        return result;
    }
    private void InitData()
    {
        this.txtStart.Text = "0";
        this.txtEnd.Text = "0";

        for (int i = 1; i <= 5; i++)
        {
            ddlSimilarCount.Items.Add(new ListItem(i.ToString(), i.ToString()));
        }
        ddlSimilarCount.SelectedValue = "2";
    }
    private List<string> GetSerialStrings(int iStart, int iEnd, int length)
    {
        int iTempStart = iStart;
        int iTempEnd = iEnd;
        List<string> serialStrings = new List<string>();

        if (iStart > iEnd)
        {
            iTempStart = iEnd;
            iTempEnd = iStart;
        }
        
        if (iTempEnd.ToString().Length > length)
            length = iTempEnd.ToString().Length;

        int iCount = iTempEnd - iTempStart;

        for (int i = iTempStart; i <= iTempEnd; i++)
        {
            serialStrings.Add(i.ToString().PadLeft(length, '0'));
        }

        return serialStrings;

    }

}