C 爬蟲程式

public string doget(string url)

catch (exception ex)
return result;
}/// /// 返回匹配多個的集合值 
/// 
/// 開始html tag 
/// 結束html tag 
/// html 
/// 
public static ilistgethtmls(string start, string end, string html)
(?(.|[/r/n])+?)", start, end);//匹配url的模式,並分組 
matchcollection mc = regex.matches(html, pattern);//滿足pattern的匹配集合 
if (mc.count != 0)}}
catch 
return list;
}public static string gethtml(string start, string end, string html)
(?(.|[/r/n])+?)?", start, end);//匹配url的模式,並分組 
ret = regex.match(html, pattern).groups["g"].value;
}catch 
return ret;
}

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