aspx转成html - .NET技术 / ASP.NET

现在最好的方法是怎么样做的？求代码

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C# code:
//根据Url地址生成静态页保持
protected void btnGeneratefromUrl_Click(object sender, EventArgs e)
{
Encoding code = Encoding.GetEncoding("utf-8");
StreamReader sr = null;
StreamWriter sw = null;
string str = null;

//读取远程路径
WebRequest temp = WebRequest.Create(txtUrl.Text.Trim());
WebResponse myTemp = temp.GetResponse();
sr = new StreamReader(myTemp.GetResponseStream(), code);
//读取
try
{
sr = new StreamReader(myTemp.GetResponseStream(), code);
str = sr.ReadToEnd();

}
catch (Exception ex)
{
throw ex;
}
finally
{
sr.Close();
}
string fileName = DateTime.Now.ToString("yyyyMMddHHmmss") + ".htm";

//写入
try
{
sw = new StreamWriter(Server.MapPath("htm/") + fileName, false, code);
sw.Write(str);
sw.Flush();

}
catch (Exception ex)
{
throw ex;
}
finally
{