asp.net 生成静态页

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Net;
using System.Text;
using System.IO;
using System.Text.RegularExpressions;

/// <summary>
///Class1 的摘要说明
/// </summary>
public class Class1
{
public Class1()
{
//
//TODO: 在此处添加构造函数逻辑
//
}

#region create html method
/// <summary>
/// 生成静态页
/// </summary>
/// <param name="strURL">详细页的url地址</param>
/// <param name="strEncode">编码类型</param>
/// <param name="path">生成的静态页路径</param>
/// <returns></returns>
public static void CreateHtml(String prosmeId)
{
#region initialize
String strURL = String.Format("http://bbs.csdn.net/topics/210003662", prosmeId);
String strEncode = "UTF-8";

String path = HttpContext.Current.Server.MapPath(String.Format("/webpage/{0}/{1}.htm","aa", prosmeId));
#endregion

HttpWebRequest myHttpWebRequest = null;
try
{
myHttpWebRequest = (HttpWebRequest)WebRequest.Create(strURL);
myHttpWebRequest.AllowAutoRedirect = true;
myHttpWebRequest.MaximumAutomaticRedirections = 5;
myHttpWebRequest.Timeout = 100000;
Encoding encode = Encoding.GetEncoding(strEncode);
HttpWebResponse myHttpWebResponse = (HttpWebResponse)myHttpWebRequest.GetResponse();
if (myHttpWebRequest.HaveResponse)
{
if (myHttpWebResponse.StatusCode == HttpStatusCode.OK)
{
Stream streamResponse = myHttpWebResponse.GetResponseStream();
StreamReader streamRead = new StreamReader(streamResponse, encode);
Char[] readBuff = new Char[256];
int count = streamRead.Read(readBuff, 0, 256);
StringBuilder buffer = new StringBuilder();
while (count > 0)
{
String outputData = new String(readBuff, 0, count);
buffer.Append(outputData);
count = streamRead.Read(readBuff, 0, 256);
}

streamResponse.Close();
streamRead.Close();
myHttpWebResponse.Close();

//内容html
string str = buffer.ToString();
//清除视图状态
str = FilterViewState(str);

lock (typeof(HtmlCreateHelper))
{
SaveFile(str, path, encode);
}
}
}
else
{
ToLog(strURL, null, "没有响应");
}
}
catch (Exception ex)
{
ToLog(strURL, ex, null);
}
finally
{
myHttpWebRequest.Abort();
myHttpWebRequest = null;
}
}
#endregion

#region save html file
private static object ioObj = new object();
private static bool SaveFile(string strMsg, string strFilePath, Encoding encode)
{
bool isOk = false;
lock (ioObj)
{
strMsg = strMsg.Trim();
if (strMsg == "")
{
throw new Exception("写入文件长度为0");
}
if (!Directory.Exists(Path.GetDirectoryName(strFilePath)))
{
Directory.CreateDirectory(Path.GetDirectoryName(strFilePath));
}
using (StreamWriter write = new StreamWriter(strFilePath, false, encode))
{
write.Write(strMsg);
isOk = true;
}
}
return isOk;
}
#endregion

#region write into log file
private static void ToLog(String renderURL, Exception err, string errMsg)
{
StringBuilder logInfo = new StringBuilder();
logInfo.Append("\n").Append("生成静态错误：\n");
if (!string.IsNullOrEmpty(errMsg))
{
logInfo.Append(errMsg).Append("\n");
}
logInfo.Append(renderURL).Append("\n");
if (err != null)
{
//logger.Error(logInfo.ToString());
}
else
{
//logger.Error(logInfo.ToString(), err);
}
}
#endregion

#region clear viewstate
private static string FilterViewState(string html)
{
string regexstr = "<input type=\"hidden\" name=\"(__VIEWSTATE|__EVENTTARGET|__EVENTARGUMENT|__CustomViewState)\"[^>]*?>";
return Regex.Replace(html, regexstr, "", RegexOptions.IgnoreCase);
}
#endregion
}