C# 根据Url获取页面所有内容

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using System.Net;using System.IO;/// <summary>/// 根据Url获取页面所有内容/// </summary>/// <param name="URL">请求的url</param>/// <returns>返回页面的内容</returns>public string GetContentFromUrl(string URL){    try    {        string strBuff = "";        int byteRead = 0;        char[] cbuffer = new char[256];        HttpWebRequest httpReq = (HttpWebRequest)WebRequest.Create(new Uri(URL));        HttpWebResponse httpResp = (HttpWebResponse)httpReq.GetResponse();        Stream respStream = httpResp.GetResponseStream();        StreamReader respStreamReader = new StreamReader(respStream, System.Text.Encoding.UTF8);        byteRead = respStreamReader.Read(cbuffer, 0, 256);        while (byteRead != 0)        {            string strResp = new string(cbuffer, 0, byteRead);            strBuff = strBuff + strResp;            byteRead = respStreamReader.Read(cbuffer, 0, 256);        }        respStream.Close();        return strBuff;    }    catch (Exception ex)    {        return ex.Message;    }}

方法二：using System.Net;/// <summary>/// 根据Url获取页面所有内容/// </summary>/// <param name="url">请求的url</param>/// <returns>返回页面的内容</returns>public string GetContentFromUrl(string url){    try    {        WebClient client = new WebClient();        client.Credentials = CredentialCache.DefaultCredentials;//获取或设置请求凭据        Byte[] pageData = client.DownloadData(url); //下载数据        string pageHtml = System.Text.Encoding.UTF8.GetString(pageData);        return pageHtml;    }    catch (WebException ex)    {        return ex.Message;    }}

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