利用浏览器控件解决数据抓取的登录登录

 1         [DllImport("wininet.dll", CharSet = CharSet.Auto, SetLastError = true)]
 2         static extern bool InternetGetCookieEx(string pchURL, string pchCookieName, StringBuilder pchCookieData, ref
 3             System.UInt32 pcchCookieData, int dwFlags, IntPtr lpReserved);
 4         
 5         [DllImport("wininet.dll", CharSet = CharSet.Auto, SetLastError = true)]
 6         static extern int InternetSetCookieEx(string lpszURL, string lpszCookieName, string lpszCookieData, int dwFlags,
 7         IntPtr dwReserved);
 8         private static string GetCookies(string url)
 9         {
10             uint dataSize = 256;
11             StringBuilder cookieData = new StringBuilder((int)dataSize);
12             if (!InternetGetCookieEx(url, null, cookieData, ref dataSize, 0x2000, IntPtr.Zero))
13             {
14                 if (dataSize < 0)
15                     return null;
16                 cookieData = new StringBuilder((int)dataSize);
17 
18                 if (!InternetGetCookieEx(url, null, cookieData, ref dataSize, 0x00002000, IntPtr.Zero))
19                     return null;
20             }
21             return cookieData.ToString();
22         }