asp.net如何获取网页源代码下面将提供几种方法，大家可以去试试。。。。。
方法一：webrequest
private string GetStringByUrl(string strUrl)
{
WebRequest wrt = WebRequest.Create(strUrl);
WebResponse wrse = wrt.GetResponse();
Stream strM = wrse.GetResponseStream();
StreamReader SR = new StreamReader(strM, Encoding.GetEncoding("gb2312"));
string strallstrm = SR.ReadToEnd();
return strallstrm;
}
方法二：HttpWebRequest
public static string GetPage(string url, Encoding encoding)
{
HttpWebRequest request = null;
HttpWebResponse response = null;
StreamReader reader = null;
try
{
request = (HttpWebRequest)WebRequest.Create(url);
request.UserAgent = "www.svnhost.cn";
request.Timeout = 20000;
request.AllowAutoRedirect = false;
response = (HttpWebResponse)request.GetResponse();
if (response.StatusCode == HttpStatusCode.OK && response.ContentLength < 1024 * 1024)
{
reader = new StreamReader(response.GetResponseStream(), encoding);
string html = reader.ReadToEnd();
return html;
}
}
catch
{
}
finally
{
if (response != null)
{
response.Close();
response = null;
}
if (reader != null)
reader.Close();
if (request != null)
request = null;
}
return string.Empty;
}