public void DeleteSessionCookie()
{
var httpFilter = new Windows.Web.Http.Filters.HttpBaseProtocolFilter();
httpFilter.CookieManager.DeleteCookie(new HttpCookie(Const.CookieSessionName, Const.UrlDomain, "/"));
httpFilter.CookieManager.DeleteCookie(new HttpCookie(Const.CookieSessionName2, Const.UrlDomain, "/"));
httpFilter.CookieManager.DeleteCookie(new HttpCookie(Const.CookieSessionName, Const.UrlDomain2, "/"));
httpFilter.CookieManager.DeleteCookie(new HttpCookie(Const.CookieSessionName2, Const.UrlDomain2, "/"));
}