asp.net抓取网页并对字符串过滤存入数据库怎么写？

Question

asp.net抓取网页并对字符串过滤存入数据库怎么写？

Answer 1

private static string getContent(string Url)             {                   string strResult = "";                   try                  {                        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);                        //声明一个HttpWebRequest请求                        request.Timeout = 30000;                        //设置连接超时时间                        request.Headers.Set("Pragma", "no-cache");                        HttpWebResponse response = (HttpWebResponse)request.GetResponse();                        Stream streamReceive = response.GetResponseStream();                        Encoding encoding = Encoding.GetEncoding("GB2312");                        StreamReader streamReader = new StreamReader(streamReceive, encoding);                        strResult = streamReader.ReadToEnd();                        streamReader.Close();                   }                   catch                  {                        throw;                   }                   return strResult;             }  

Answer 2

private static string getContent(string Url)   
{  string strResult = "";   
    try  {  
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url); 
 //声明一个HttpWebRequest请求  
 request.Timeout = 30000;      //设置连接超时时间                        request.Headers.Set("Pragma", "no-cache");      
 HttpWebResponse response = (HttpWebResponse)request.GetResponse();                      
  Stream streamReceive = response.GetResponseStream();                        Encoding encoding = Encoding.GetEncoding("GB2312");                        StreamReader streamReader = new StreamReader(streamReceive, encoding); 
  strResult = streamReader.ReadToEnd();   
 streamReader.Close();                  
 }  catch  {   throw;  } 
 return strResult;    
}  

Answer 3

先取html,分析出你要的内容，然后把一些字符做替换一下，再存入数据库。