正規表現リモートWebページの取得

[一篮饭特稀オリジナル,转载请注明出典http://www.cnblogs.com/wanghafan/archive/2012/02/09/2344276.html]
--簡単な例: 


View Code

1 using System.Text;
2 using System.Text.RegularExpressions;
3 
4 string str = "<img>123456789</img>";
5 string regexStr = @"<img>([^<]*)</img>"; 
6 Match mc = Regex.Match(str, regexStr, RegexOptions.IgnoreCase);
7 Response.Write(mc.Groups[1].Value);

--天気の例: 


View Code

 1 using System.Text;
 2 using System.Text.RegularExpressions;
 3 
 4 string str = GetRequestString("http://www.ntxnw.com.cn/tq.asp?s_type=00", 8000, 1, Encoding.GetEncoding("GB2312"));
 5 string regexStr = XXXXXXXXXXXXXXXXXXXXXX;
 6 Match mc = Regex.Match(str, regexStr, RegexOptions.IgnoreCase);
 7 this.divContent.InnerHtml=mc.Groups[1].Value;
 8          /// <summary>
 9 ///           
10 /// </summary>
11 /// <param name="strUrl">           </param>
12 /// <param name="timeout">      ，     8000</param>
13 /// <param name="enterType">       ，0   ，1       </param>
14 /// <param name="EnCodeType">    </param>
15 /// <returns></returns>
16 ///      static string
17         public string GetRequestString(string strUrl, int timeout, int enterType, System.Text.Encoding EnCodeType)
18         {
19             string strResult;
20             try
21             {
22                 HttpWebRequest myReq = (HttpWebRequest)HttpWebRequest.Create(strUrl);
23                 myReq.Timeout = timeout;
24                 HttpWebResponse HttpWResp = (HttpWebResponse)myReq.GetResponse();
25                 Stream myStream = HttpWResp.GetResponseStream();
26                 StreamReader sr = new StreamReader(myStream, EnCodeType);
27                 StringBuilder strBuilder = new StringBuilder();
28                 while (-1 != sr.Peek())
29                 {
30                     strBuilder.Append(sr.ReadLine());
31                     if (enterType == 1)
32                     {
33                         strBuilder.Append("\r
");
34                     }
35                 }
36                 strResult = strBuilder.ToString();
37             }
38             catch (Exception err)
39             {
40                 strResult = "    ：" + err.Message;
41             }
42             return strResult;
43         }