网页采集程序（超级简单版） - 老秘网_材夜思范文

网页采集程序（超级简单版）
01 protected void btn_click(object sender, EventArgs e)

02 {

03 //方法一：

04 //System.Net.WebClient wc = new System.Net.WebClient();

05 //byte[] b = wc.DownloadData("http://www.baidu.com");

06 //string html = System.Text.Encoding.GetEncoding("gb2312").GetString(b);

07 //html = html.Substring(html.IndexOf("") + "".Length);

08 //html = html.Substring(0, html.IndexOf(""));

09 //Response.Write(html);

11 //方法二：

12 //获取整个网页

13 System.Net.WebClient wc = new System.Net.WebClient();

14 System.IO.Stream sm = wc.OpenRead("http://www.baidu.com");

15 System.IO.StreamReader sr = new System.IO.StreamReader(sm, System.Text.Encoding.Default, true, 256000);

16 string html = sr.ReadToEnd();

17 sr.Close();

18 //根据规则获取想要的内容

19 html = html.Substring(html.IndexOf("") + "".Length);

20 html = html.Substring(0, html.IndexOf(""));

21 Response.Write(html);

22 }