cdownloadyahoodata.cs

一个pocketPC 程序

using System;
using System.Net;
using System.IO;
using Microsoft.VisualBasic;

namespace SmartWKN
{
	/// <summary>
	/// Download Yahoo Data
	/// </summary>
	public class cDownloadYahooData
	{
		public cDownloadYahooData()
		{
			//
			// TODO: Konstruktorlogik hier hinzuf黦en
			//
		}

		public struct YahooData
		{
			public string WKN;
			public string LastPrice;
			public string Date;
			public string Time;
			public string Change;
			public string Open;
			public string High;
			public string Low;
		}

		private bool bolSucess = false;

		public bool Sucess
		{
			get { return bolSucess; }
		}

		public YahooData GetYahooData(string URL, string GraphURL, string SaveTO, string SaveTOImage)
		{
			
			YahooData retValue;
			HttpWebRequest req = null;
			HttpWebResponse resp = null;
			FileStream str = null;
			Stream respStream = null;
			BinaryReader binReader = null;
			BinaryWriter binWriter = null;
			int bytesRead = 0;
			byte[] buffer = new byte[1024];
			StreamReader reader = null;

			retValue = new YahooData();

			// Detect Internet Connection
			if (cDetectInternet.DetectInternet() == false)
			{
				bolSucess = false;
				return retValue;
			}

			// Download Data
			try
			{
				req = (HttpWebRequest)HttpWebRequest.Create(URL);
				resp = (HttpWebResponse)req.GetResponse();

				if(resp.StatusCode == HttpStatusCode.OK)
				{
					str = new FileStream(SaveTO, FileMode.Create);
					respStream = resp.GetResponseStream();
					binReader = new BinaryReader(respStream, System.Text.Encoding.Default);
					binWriter = new BinaryWriter(str);

					do
					{
						bytesRead = binReader.Read(buffer, 0, buffer.Length);
						binWriter.Write(buffer, 0, buffer.Length);
					}
					while(bytesRead > 0);
					
					binReader.Close();
					binWriter.Close();
					str.Close();
					req = null;
					resp.Close();
					resp = null;
				}
			}
			catch(Exception exc)
			{
				System.Diagnostics.Debug.WriteLine(exc.Message);
				bolSucess = false;
				return retValue;				
			}

			//Parse Data
			if(File.Exists(SaveTO) == false)
			{
				bolSucess = false;
				return retValue;
			}
			try
			{
				reader = new StreamReader(SaveTO, System.Text.Encoding.Default);
				string strTemp = reader.ReadLine();
				reader.Close();
				string[] strData = strTemp.Split(Strings.Chr(44));
        retValue.WKN = strData[0].Replace(Strings.Chr(34).ToString(), string.Empty);
        retValue.LastPrice = strData[1];
        retValue.Date = strData[2].Replace(Strings.Chr(34).ToString(), String.Empty);
        retValue.Time = strData[3].Replace(Strings.Chr(34).ToString(), String.Empty);
        retValue.Change = strData[4];
        retValue.Open = strData[5];
        retValue.High = strData[6];
        retValue.Low = strData[7];
			}
			catch
			{	
				bolSucess = false;
				return retValue;
			}

			DownloadGraph(GraphURL, SaveTOImage);

			bolSucess = true;
			return retValue;

		}

		private void DownloadGraph(string URL, string SaveTO)
		{

			HttpWebRequest req = null;
			HttpWebResponse resp = null;
			FileStream str = null;
			Stream respStream = null;
			BinaryReader binReader = null;
			BinaryWriter binWriter = null;
			int bytesRead = 0;
			byte[] buffer = new byte[1024];

			try
			{
				if(File.Exists(SaveTO) == true)
				{
					File.Delete(SaveTO);
				}
			}
			catch
			{
			}

			try
			{
				req = (HttpWebRequest)HttpWebRequest.Create(URL);
				resp = (HttpWebResponse)req.GetResponse();

				if(resp.StatusCode == HttpStatusCode.OK)
				{
					str = new FileStream(SaveTO, FileMode.Create);
					respStream = resp.GetResponseStream();
					binReader = new BinaryReader(respStream, System.Text.Encoding.Default);
					binWriter = new BinaryWriter(str);

					do
					{
						bytesRead = binReader.Read(buffer, 0, buffer.Length);
						binWriter.Write(buffer, 0, buffer.Length);
					}
					while(bytesRead > 0);
					
					binReader.Close();
					binWriter.Close();
					str.Close();
				}				
			}
			catch(Exception exc)
			{
				System.Diagnostics.Debug.WriteLine(exc.Message);
			}
		}


	}
}