Question

如何用 asp.net 读取网页 keywords 内容？

读外网的 比如：http://sports.sina.com.cn/j/2011-03-25/05315503797.shtml 这链接的keywords

Answer 1

如果是读Head里的，用这个没问题（head标记要有runat="server"）
foreach (Control c in Page.Header.Controls)
{
if (c.GetType().Name == "HtmlMeta")
{
if (((HtmlMeta)c).Name == "keywords")
{
Response.Write(((HtmlMeta)c).Content);
}
}
}

Answer 2

HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create("http://www.baidu.com");
myReq.Accept="Accept-Language: zh-cn";
myReq.Referer="http://www.baidu.com";
myReq.MaximumAutomaticRedirections=1;
myReq.AllowAutoRedirect=true;
HttpWebResponse myres=(HttpWebResponse)myReq.GetResponse();//
Stream resStream = myres.GetResponseStream();
StreamReader sr = new StreamReader(resStream, System.Text.Encoding.Default);

Response.Write(sr.ReadToEnd());

Answer 3

你要读HTML控件的还是ASP.NET控件的值？
如果是后者，直接通过控件ID.属性就可以了。

Answer 4

读取自己的，还是外部的啊

追问

读外网的 比如：http://sports.sina.com.cn/j/2011-03-25/05315503797.shtml 这链接的keywords

追答

using (System.Net.WebClient wc = new System.Net.WebClient())
{
string html = wc.DownloadString("http://sports.sina.com.cn/j/2011-03-25/05315503797.shtml");
int sp = html.IndexOf("name=keywords");
int se = html.IndexOf("\">", sp);
html = html.Substring(sp, se - sp);
sp = html.IndexOf("\"") + 1;
string 关键词 = html.Substring(sp);
}

Answer 5

String keywords=Request.Form["keywords"];