//取出Cookie,当登录后才能取 [DllImport("wininet.dll", CharSet = CharSet.Auto, SetLastError = true)] static extern bool InternetGetCookieEx(string pchURL, string pchCookieName, StringBuilder pchCookieData, ref System.UInt32 pcchCookieData, int dwFlags, IntPtr lpReserved); private static string GetCookies(string url) { uint datasize = 1024; StringBuilder cookieData = new StringBuilder((int)datasize); if (!InternetGetCookieEx(url, null, cookieData, ref datasize, 0x2000, IntPtr.Zero)) { if (datasize < 0) return null; cookieData = new StringBuilder((int)datasize); if (!InternetGetCookieEx(url, null, cookieData, ref datasize, 0x00002000, IntPtr.Zero)) return null; } return cookieData.ToString(); }