private CookieContainer CookieParse(string str, string domain)
{
    CookieContainer result = new CookieContainer();
    result.PerDomainCapacity = 50;
    string[] arr = str.Replace(" ", "").Split(';');
    for (int i = 0; i < arr.Length; i++)
    {
        int index = arr[i].IndexOf("=");
        if (index != -1)
        {
            Cookie cookie = new Cookie(arr[i].Substring(0, index), arr[i].Substring(index + 1));
            cookie.Domain = domain;
            result.Add(cookie);
        }
    }
    return result;
}