public static CookieContainer GetCookiesByUserInfo(Uri siteUrl, string userName, string password)
{
var token = new SharePointOnlineCredentials(userName, GetPassword(password)).GetAuthenticationCookie(siteUrl);
string cookieName = token.Substring(0, token.IndexOf('='));
string cookieValue = token.Substring(token.IndexOf('=') + 1);
CookieContainer cookies = new CookieContainer();
cookies.Add(new Cookie(cookieName, cookieValue, "/", siteUrl.Host));
return(cookies);
}