using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace NewsCrawler
{
	public partial class NewsForm : Form
	{
		CybosHelper m_CybosHelper = null;
		CodeList m_CodeList = null;
		TextCondition m_Condition = null;
		ConfigForm m_ConfigForm = null;

		delegate void InsertListView(string strTitle, DateTime time, string strURL, string strRef, bool bInitial);

		System.Timers.Timer m_CrawlTimer = new System.Timers.Timer();
		int m_iCrawlInterval = 500;
		bool m_bBrowserReload = false;
		bool m_bBuy = false;



		public NewsForm()
		{
			InitializeComponent();

			Config.Init();
			Util.SetLogView(tbLog);
			m_ConfigForm = new ConfigForm(this);
			m_CodeList = new CodeList();
			m_Condition = new TextCondition();


			wbView.ScriptErrorsSuppressed = false;

			ReadKIND(true);
			ReadDart(true);
			ReadEtoday(true);
			ReadAsiaE(true);
			ReadEdaily(true);
			ReadMoneyToday(true);
			ReadFinacialNews(true);


			lvList.ListViewItemSorter = new ListViewItemComparer(0, SortOrder.Ascending);
			lvList.Sorting = SortOrder.Ascending;
			lvList.Sort();

			if(lvList.Items.Count > 0)
			{
				lvList.Items[lvList.Items.Count - 1].Selected = true;
				lvList.Select();
				if(lvList.SelectedItems.Count > 0)
					lvList.SelectedItems[0].EnsureVisible();
			}

			m_CrawlTimer.Elapsed+=CrawlTimer_Tick;
			m_CrawlTimer.Interval=m_iCrawlInterval;
			m_CrawlTimer.Start();

			m_CybosHelper = new CybosHelper();

			Test();
		}

		void Test()
		{
			if(Util.IsDebugging() == false)
				return;

			InsertItem("[test] 덕산하이메탈, 덕산네오룩스 66만여주 취득14:38", new DateTime(2016, 11, 30, 00, 00, 00), "http://www.asiae.co.kr/news/sokbo/sokbo_view.htm?idxno=2016112914371817318", "asiae", false);
			InsertItem("[test] 자연과환경, 12월15일~22일 주주명부폐쇄14:19", new DateTime(2016, 11, 30, 00, 00, 00), "http://www.asiae.co.kr/news/sokbo/sokbo_view.htm?idxno=2016112914193170301", "asiae", false);
			InsertItem("[test] 이엠코리아, 한국항공우주산업과 3억원 규모 공급계약14:06", new DateTime(2016, 11, 30, 00, 00, 00), "http://www.asiae.co.kr/news/sokbo/sokbo_view.htm?idxno=2016112914055964082", "asiae", false);
			
		}

		private void BuyItem(CodeList.CODE_VALUE Code)
		{
			if(m_bBuy == false)
				return;

			m_CybosHelper.Buy(Code, Config.GetBuyPrice());
			m_CodeList.AddDuplicatedList(Code.m_strCode, Code.m_strName);
		}

		public void OnManualItemBuy(CodeList.CODE_VALUE Code)
		{
			BuyItem(Code);
		}

		void ProcessSearchAndBuy(string strTitle, string strRef)
		{
			CodeList.CODE_VALUE Code = m_CodeList.SearchCode(strTitle);
			if(Code != null)
			{
				TextCondition.RESULT MatchResult = m_Condition.Match(strTitle);
				switch(MatchResult.m_enType)
				{
					case TextCondition.TYPE.NEGATIVE:
						Util.Log(Util.LOG_TYPE.NEGATIVE, string.Format("[{0}] {1} (keyword:{2}, code:{3})", strRef, strTitle, MatchResult.m_strKeyword, Code.ToString()));
						break;

					case TextCondition.TYPE.POSITIVE:
						if((Code.m_enType&CodeList.CODE_TYPE.DENIAL) == CodeList.CODE_TYPE.DENIAL)
							Util.Log(Util.LOG_TYPE.DENIAL, string.Format("[{0}] {1} (keyword:{2}, code:{3})", strRef, strTitle, MatchResult.m_strKeyword, Code.ToString()));
						else if((Code.m_enType&CodeList.CODE_TYPE.DENIAL) == CodeList.CODE_TYPE.DUPLICATED)
							Util.Log(Util.LOG_TYPE.DUPLICATED, string.Format("[{0}] {1} (keyword:{2}, code:{3})", strRef, strTitle, MatchResult.m_strKeyword, Code.ToString()));
						else if((Code.m_enType&CodeList.CODE_TYPE.DENIAL) == CodeList.CODE_TYPE.MANUAL)
							Util.Log(Util.LOG_TYPE.MANUAL_CODE, string.Format("[{0}] {1} (keyword:{2}, code:{3})", strRef, strTitle, MatchResult.m_strKeyword, Code.ToString()));
						else
						{
							Util.Log(Util.LOG_TYPE.POSITIVE, string.Format("[{0}] {1} (keyword:{2}, code:{3})", strRef, strTitle, MatchResult.m_strKeyword, Code.ToString()));
							BuyItem(Code);
						}	
						break;

					case TextCondition.TYPE.MANUAL:
						Util.Log(Util.LOG_TYPE.MANUAL_KEYWORD, string.Format("[{0}] {1} (keyword:{2}, code:{3})", strRef, strTitle, MatchResult.m_strKeyword, Code.ToString()));

						if(m_bBuy == true)
						{
							ModelessPopup ManualPopup = new ModelessPopup(this);
							ManualPopup.SetMessage(string.Format("{0} 매수하시겠습니까?", Code.ToString()), Code);
							ManualPopup.Show();
						}
						break;

					case TextCondition.TYPE.NOT_MATCHED:
						Util.Log(Util.LOG_TYPE.DEBUG, string.Format("[NOT_MATCHED] [{0}] {1}({2})", strRef, strTitle, Code.ToString()));
						break;
				}
			}
		}

		private void InsertItem(string strTitle, DateTime time, string strURL, string strRef, bool bInitial)
		{
			try
			{
				if(this.InvokeRequired)
				{
					this.Invoke(new InsertListView(InsertItem), strTitle, time, strURL, strRef, bInitial);
				}
				else
				{
					foreach(ListViewItem item in lvList.Items)
					{
						if(item.SubItems[chLink.Index].Text == strURL)
							return;
					}

					lvList.Items.Add(new ListViewItem(new string[] { time.ToString("HH:mm:ss"), strTitle, strRef, strURL }));


					if(bInitial == false && chAutoSelect.Checked == true)
					{
						m_bBrowserReload = true;
					}

					foreach(ColumnHeader col in lvList.Columns)
						col.Width = -2;


					if(bInitial == false)
					{
						lvList.Sort();
						ProcessSearchAndBuy(strTitle, strRef);
					}
				}
			}
			catch(Exception ex)
			{
				Util.Log(Util.LOG_TYPE.ERROR, ex.Message);
			}
		}

		bool ReadAsiaE(bool bInitial = false)
		{
			bool bHasNew = false;

			try
			{
				string strServerURL = "http://www.asiae.co.kr";
				WebRequest request = WebRequest.Create("http://www.asiae.co.kr/news/sokbo/sokbo_left.htm");
				request.Credentials=CredentialCache.DefaultCredentials;
				request.Timeout=2000;

				using(HttpWebResponse response = (HttpWebResponse)request.GetResponse())
				{
					using(Stream dataStream = response.GetResponseStream())
					{
						using(StreamReader reader = new StreamReader(dataStream, Encoding.GetEncoding("EUC-KR")))
						{
							string responseFromServer = WebUtility.HtmlDecode(reader.ReadToEnd());
							responseFromServer = responseFromServer.Replace("\"\"", "\"");

							HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
							doc.LoadHtml(responseFromServer);
							string strXPath = "//div[contains(@class, 'txtform')]/ul/li";
							var lists = doc.DocumentNode.SelectNodes(strXPath);
							foreach(var item in lists)
							{
								string strTitle1 = item.SelectSingleNode(".//a").GetAttributeValue("title", "");
								string strTitle2 = item.SelectSingleNode(".//a").FirstChild.InnerText;
								string strTitle = (strTitle1.Length > strTitle2.Length ? strTitle1 : strTitle2);
								string strTime = item.SelectSingleNode(".//span").InnerText;
								string strURL = strServerURL+item.SelectSingleNode(".//a").GetAttributeValue("href", "");


								if(Regex.IsMatch(strTime, @"\d+/\d+")==true)
								{
									//Console.WriteLine("어제 기사 : " + item.InnerHtml);
									continue;
								}

								InsertItem(strTitle, DateTime.ParseExact(strTime, "HH:mm", CultureInfo.CurrentCulture), strURL, "아시아경제", bInitial);
							}

						}
					}
				}
			}
			catch(Exception e)
			{
				Util.Log(Util.LOG_TYPE.ERROR, e.ToString());
			}

			return bHasNew;
		}

		bool ReadEtoday(bool bInitial = false)
		{
			bool bHasNew = false;

			try
			{
				//string strServerURL = "http://www.etoday.co.kr";
				WebRequest request = WebRequest.Create("http://www.etoday.co.kr/news/flash/flash_list.php?tab=1");
				request.Credentials=CredentialCache.DefaultCredentials;
				request.Timeout=2000;

				using(HttpWebResponse response = (HttpWebResponse)request.GetResponse())
				{
					using(Stream dataStream = response.GetResponseStream())
					{
						using(StreamReader reader = new StreamReader(dataStream, Encoding.GetEncoding("utf-8")))
						{
							string responseFromServer = WebUtility.HtmlDecode(reader.ReadToEnd());

							HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
							doc.LoadHtml(responseFromServer);
							string strXPath = "//div[contains(@class, 'flash_tab_lst')]/ul/li";
							var lists = doc.DocumentNode.SelectNodes(strXPath);
							foreach(var item in lists)
							{
								string strTitle = item.SelectSingleNode(".//a").InnerText;
								string strTime = item.SelectSingleNode(".//span[contains(@class, 'flash_press')]").InnerText;
								string strURL = item.SelectSingleNode(".//a").GetAttributeValue("href", "");
								strURL="http://www.etoday.co.kr/news/section/newsview.php?idxno="+Regex.Replace(strURL, @"\D", "");

								if(Regex.IsMatch(strTime, @"\d+/\d+")==true)
								{
									//Console.WriteLine("어제 기사 : " + item.InnerHtml);
									continue;
								}

								InsertItem(strTitle, DateTime.ParseExact(strTime, "HH:mm", CultureInfo.CurrentCulture), strURL, "이투데이", bInitial);
							}
						}
					}
				}
			}
			catch(Exception e)
			{
				Util.Log(Util.LOG_TYPE.ERROR, e.ToString());
			}

			return bHasNew;
		}

		bool ReadDart(bool bInitial = false)
		{
			bool bHasNew = false;

			try
			{
				string strServerURL = "https://dart.fss.or.kr";
				WebRequest request = WebRequest.Create("https://dart.fss.or.kr/dsac001/mainAll.do");
				request.Credentials=CredentialCache.DefaultCredentials;
				request.Timeout=2000;

				using(HttpWebResponse response = (HttpWebResponse)request.GetResponse())
				{
					using(Stream dataStream = response.GetResponseStream())
					{
						using(StreamReader reader = new StreamReader(dataStream, Encoding.GetEncoding("utf-8")))
						{
							string responseFromServer = WebUtility.HtmlDecode(reader.ReadToEnd());

							HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
							doc.LoadHtml(responseFromServer);

							string strXPath = "//div[@id='listContents']/div[contains(@class, 'table_list')]/table/tr";
							var lists = doc.DocumentNode.SelectNodes(strXPath);
							foreach(var item in lists)
							{
								var rows = item.SelectNodes(".//td");
								if(rows.Count < 3)
									continue;

								string strTitle = rows[2].InnerText;
								strTitle=strTitle.Trim();
								string strTime = item.SelectSingleNode(".//td[contains(@class, 'cen_txt')]").InnerText;
								strTime=strTime.Trim();
								string strURL = rows[2].SelectSingleNode(".//a").GetAttributeValue("href", "");
								strURL=strURL.Trim();
								strURL =strServerURL+strURL;

								if(Regex.IsMatch(strTime, @"\d+/\d+")==true)
								{
									//Console.WriteLine("어제 기사 : " + item.InnerHtml);
									continue;
								}

								InsertItem(strTitle, DateTime.ParseExact(strTime, "HH:mm", CultureInfo.CurrentCulture), strURL, "DART", bInitial);
							}
						}
					}
				}
			}
			catch(Exception e)
			{
				Util.Log(Util.LOG_TYPE.ERROR, e.ToString());
			}

			return bHasNew;
		}

		bool ReadKIND(bool bInitial = false)
		{
			bool bHasNew = false;

			try
			{
				//string strServerURL = "https://dart.fss.or.kr";
				WebRequest request = WebRequest.Create("http://kind.krx.co.kr/disclosure/rsstodaydistribute.do?method=searchRssTodayDistribute&repIsuSrtCd=&mktTpCd=0&searchCorpName=&currentPageSize=1000");
				request.Credentials=CredentialCache.DefaultCredentials;
				request.Timeout=2000;
				int iCDATALen = "<![CDATA[".Length;

				using(HttpWebResponse response = (HttpWebResponse)request.GetResponse())
				{
					using(Stream dataStream = response.GetResponseStream())
					{
						using(StreamReader reader = new StreamReader(dataStream, Encoding.GetEncoding("utf-8")))
						{
							string responseFromServer = WebUtility.HtmlDecode(reader.ReadToEnd());

							HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
							doc.LoadHtml(responseFromServer);

							string strXPath = "//item";
							var lists = doc.DocumentNode.SelectNodes(strXPath);
							if(lists == null)
								return false;

							foreach(var item in lists)
							{
								string strTitle = item.SelectSingleNode(".//title").InnerText;
								strTitle = strTitle.Substring(iCDATALen, strTitle.Length-iCDATALen-3);
								string strTime = item.ChildNodes["pubDate"].InnerText;
								DateTime time = Convert.ToDateTime(strTime);
								strTime = time.ToString("HH:mm:ss");
								string strURL = item.ChildNodes["link"].NextSibling.InnerText;
								strURL = strURL.Substring(iCDATALen, strURL.Length-iCDATALen-3);

								if(Regex.IsMatch(strTime, @"\d+/\d+")==true)
								{
									//Console.WriteLine("어제 기사 : " + item.InnerHtml);
									continue;
								}

								InsertItem(strTitle, DateTime.ParseExact(strTime, "HH:mm:ss", CultureInfo.CurrentCulture), strURL, "KIND", bInitial);
							}
						}
					}
				}
			}
			catch(Exception e)
			{
				Util.Log(Util.LOG_TYPE.ERROR, e.ToString());
			}

			return bHasNew;
		}

		bool ReadEdaily(bool bInitial = false)
		{
			bool bHasNew = false;

			try
			{
				string strServerURL = "http://www.edaily.co.kr/news/realtime/realtime_NewsRead.asp";
				WebRequest request = WebRequest.Create("http://www.edaily.co.kr/news/realtime/realtime_NewsList_1.asp");
				request.Credentials=CredentialCache.DefaultCredentials;
				request.Timeout=2000;

				DateTime PrevTime = DateTime.Now;

				using(HttpWebResponse response = (HttpWebResponse)request.GetResponse())
				{
					using(Stream dataStream = response.GetResponseStream())
					{
						using(StreamReader reader = new StreamReader(dataStream, Encoding.GetEncoding("EUC-KR")))
						{
							string responseFromServer = WebUtility.HtmlDecode(reader.ReadToEnd());

							HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
							doc.LoadHtml(responseFromServer);
							string strXPath = "//li[contains(@id, 'NewsIcon')]";
							var lists = doc.DocumentNode.SelectNodes(strXPath);
							foreach(var item in lists)
							{
								string strTitle = item.SelectSingleNode(".//a").GetAttributeValue("title", "");
								string strTime = item.SelectSingleNode(".//span").InnerText;

								string strID = item.GetAttributeValue("id", "");
								strID = strID.Substring("NewsIcon_".Length);
								string strURL = strServerURL+"?newsid="+strID;

								DateTime Time;
								DateTime.TryParseExact(strTime, "HH:mm", CultureInfo.CurrentCulture, DateTimeStyles.None, out Time);
								if(Time > PrevTime)
									break;
								PrevTime = Time;

								InsertItem(strTitle, Time, strURL, "이데일리", bInitial);
							}
						}
					}
				}
			}
			catch(Exception e)
			{
				Util.Log(Util.LOG_TYPE.ERROR, e.ToString());
			}

			return bHasNew;
		}

		bool ReadMoneyToday(bool bInitial = false)
		{
			bool bHasNew = false;

			try
			{
				string strServerURL = "http://news.mt.co.kr/mtview.php?no=";
				WebRequest request = WebRequest.Create("http://news.mt.co.kr/newsflash/newsflash.html");
				request.Credentials=CredentialCache.DefaultCredentials;
				request.Timeout=2000;

				DateTime PrevTime = DateTime.Now;

				using(HttpWebResponse response = (HttpWebResponse)request.GetResponse())
				{
					using(Stream dataStream = response.GetResponseStream())
					{
						using(StreamReader reader = new StreamReader(dataStream, Encoding.GetEncoding("EUC-KR")))
						{
							string responseFromServer = WebUtility.HtmlDecode(reader.ReadToEnd());

							HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
							doc.LoadHtml(responseFromServer);
							string strXPath = "//div[@id='articleList']//li[@class='bundle']";

							var lists = doc.DocumentNode.SelectNodes(strXPath);
							foreach(var item in lists)
							{
								string strTitle = item.SelectSingleNode(".//a").InnerText;
								string strTime = item.SelectSingleNode(".//span").InnerText;

								string strID = item.SelectSingleNode(".//a").GetAttributeValue("href", "");
								int iStart = strID.IndexOf('\'', 0);
								iStart = strID.IndexOf('\'', iStart+1);
								iStart = strID.IndexOf('\'', iStart+1);
								int iEnd = strID.IndexOf('\'', iStart+1);
								strID = strID.Substring(iStart+1, iEnd-iStart+1);
								string strURL = strServerURL+strID;

								DateTime Time;
								DateTime.TryParseExact(strTime, "HH:mm", CultureInfo.CurrentCulture, DateTimeStyles.None, out Time);
								if(Time > PrevTime)
									break;
								PrevTime = Time;

								InsertItem(strTitle, Time, strURL, "머니투데이", bInitial);
							}
						}
					}
				}
			}
			catch(Exception e)
			{
				Util.Log(Util.LOG_TYPE.ERROR, e.ToString());
			}

			return bHasNew;
		}

		bool ReadFinacialNews(bool bInitial = false)
		{
			bool bHasNew = false;

			try
			{
				string strServerURL = "http://www.fnnews.com/news/";
				WebRequest request = WebRequest.Create("http://www.fnnews.com/newsflash/today/data?type=json");
				request.Credentials=CredentialCache.DefaultCredentials;
				request.Timeout=2000;

				DateTime Today = DateTime.Now;

				using(HttpWebResponse response = (HttpWebResponse)request.GetResponse())
				{
					using(Stream dataStream = response.GetResponseStream())
					{
						using(StreamReader reader = new StreamReader(dataStream, Encoding.GetEncoding("UTF-8")))
						{
							string responseFromServer = WebUtility.HtmlDecode(reader.ReadToEnd());

							dynamic jObj = Newtonsoft.Json.JsonConvert.DeserializeObject(responseFromServer);
							foreach(var data in jObj)
							{
								string strTitle = data["title"];
								string strTime = data["date"];
								DateTime Time;
								DateTime.TryParseExact(strTime, "yyyy.MM.dd HH:mm", CultureInfo.CurrentCulture, DateTimeStyles.None, out Time);

								string strCode = data["code"];
								string strURL = strServerURL+strCode;

								if(Time.DayOfYear == Today.DayOfYear)
									InsertItem(strTitle, Time, strURL, "파이낸셜뉴스", bInitial);
							}
						}
					}
				}
			}
			catch(Exception e)
			{
				Util.Log(Util.LOG_TYPE.ERROR, e.ToString());
			}

			return bHasNew;
		}

		private void UpdateBrowser()
		{
			if(lvList.InvokeRequired == true)
			{
				lvList.Invoke(new Action(UpdateBrowser));
			}
			else
			{
				if(chAutoSelect.Checked == true && m_bBrowserReload == true)
				{
					if(lvList.SelectedItems.Count == 0 || lvList.SelectedItems[0].Index != lvList.Items.Count-1)
					{
						lvList.Items[lvList.Items.Count - 1].Selected = true;
						lvList.Select();
						if(lvList.SelectedItems.Count > 0)
							lvList.SelectedItems[0].EnsureVisible();
					}

					m_bBrowserReload = false;
				}
			}
		}

		private void CrawlTimer_Tick(object sender, EventArgs e)
		{
			m_CrawlTimer.Enabled = false;

			if(chAutoReload.Checked == true)
			{
				ReadKIND();
				ReadDart();
				ReadAsiaE();
				ReadEtoday();
				ReadEdaily();
				ReadMoneyToday();
				ReadFinacialNews();
			}

			UpdateBrowser();

			m_CrawlTimer.Interval = m_iCrawlInterval;
			m_CrawlTimer.Enabled = true;
		}

		private void lvList_SelectedIndexChanged(object sender, EventArgs e)
		{
			if(lvList.SelectedItems.Count <= 0)
				return;

			string strURL = lvList.SelectedItems[0].SubItems[chLink.Index].Text;
			wbView.ScriptErrorsSuppressed = true;
			wbView.Navigate(strURL);
		}

		private void tbInterval_KeyPress(object sender, KeyPressEventArgs e)
		{
			if(e.KeyChar == Convert.ToChar(Keys.Enter))
			{
				m_iCrawlInterval = (int)(float.Parse(Regex.Replace(tbInterval.Text, @"\D\.", "")) * 1000);
				if(m_iCrawlInterval < 1)
					m_iCrawlInterval = 500;

				tbInterval.Text = (m_iCrawlInterval / (float)1000).ToString("##0.0") + "초";
			}
		}

		private void lvList_ColumnClick(object sender, ColumnClickEventArgs e)
		{
			SortOrder Order = (lvList.Sorting == SortOrder.Descending || lvList.Sorting == SortOrder.None) ? SortOrder.Ascending : SortOrder.Descending;

			lvList.ListViewItemSorter = new ListViewItemComparer(e.Column, Order);
			lvList.Sorting = Order;
			lvList.Sort();
		}

		private void btnConfig_Click(object sender, EventArgs e)
		{
			FormCollection OpenForms = Application.OpenForms;
			bool bOpen = false;
			foreach(Form form in OpenForms)
			{
				if(form == m_ConfigForm)
				{
					bOpen = true;
					break;
				}
			}

			if(bOpen == false)
			{
				m_ConfigForm.Show();
			}
			else
			{
				m_ConfigForm.BringToFront();
			}
		}

		public void OnManualCodeClick(int iPrice)
		{
			m_CodeList.MakeManualList(iPrice);
		}

		public void ApplyDenialCode()
		{
			m_CodeList.LoadDenialList();
		}
		public void ApplyDuplicatedCode()
		{
			m_CodeList.LoadDuplicatedList();
		}

		public void ApplyPositive()
		{
			m_Condition.LoadPositive();
		}

		public void ApplyManual()
		{
			m_Condition.LoadManual();
		}

		public void ApplyNegative()
		{
			m_Condition.LoadNegative();
		}

		public void ApplySynonym()
		{
			m_CodeList.LoadSynonym();
		}

		private void NewsForm_FormClosing(object sender, FormClosingEventArgs e)
		{
			Util.Clear();
		}

		private void chBuy_CheckedChanged(object sender, EventArgs e)
		{
			m_bBuy = chBuy.Checked;

			if(m_bBuy == true)
				Util.Log(Util.LOG_TYPE.VERVOSE, "매수 시작");
			else
				Util.Log(Util.LOG_TYPE.VERVOSE, "매수 취소");
		}
	}


	class ListViewItemComparer : IComparer
	{
		int m_iColumn = 0;
		SortOrder m_Order = SortOrder.Ascending;

		public ListViewItemComparer(int column, SortOrder Order)
		{
			m_iColumn = column;
			m_Order = Order;
		}

		public int Compare(object x, object y)
		{
			ListViewItem item1 = (ListViewItem)x;
			ListViewItem item2 = (ListViewItem)y;
			if(m_Order == SortOrder.Ascending)
				return string.Compare(item1.SubItems[m_iColumn].Text, item2.SubItems[m_iColumn].Text);
			else
				return string.Compare(item2.SubItems[m_iColumn].Text, item1.SubItems[m_iColumn].Text);
		}
	}

}