//check whether the cookies contains the ckToCheck cookie
    //support:
    //ckTocheck is Cookie/string
    //cookies is Cookie/string/CookieCollection/string[]
    public bool isContainCookie(object ckToCheck, object cookies)
    {
        bool isContain = false;

        if ((ckToCheck != null) && (cookies != null))
        {
            string ckName = "";
            Type type = ckToCheck.GetType();

            //string typeStr = ckType.ToString();

            //if (ckType.FullName == "System.string")
            if (type.Name.ToLower() == "string")
            {
                ckName = (string)ckToCheck;
            }
            else if (type.Name == "Cookie")
            {
                ckName = ((Cookie)ckToCheck).Name;
            }

            if (ckName != "")
            {
                type = cookies.GetType();

                // is single Cookie
                if (type.Name == "Cookie")
                {
                    if (ckName == ((Cookie)cookies).Name)
                    {
                        isContain = true;
                    }
                }
                // is CookieCollection
                else if (type.Name == "CookieCollection")
                {
                    foreach (Cookie ck in (CookieCollection)cookies)
                    {
                        if (ckName == ck.Name)
                        {
                            isContain = true;
                            break;
                        }
                    }
                }
                // is single cookie name string
                else if (type.Name.ToLower() == "string")
                {
                    if (ckName == (string)cookies)
                    {
                        isContain = true;
                    }
                }
                // is cookie name string[]
                else if (type.Name.ToLower() == "string[]")
                {
                    foreach (string name in ((string[])cookies))
                    {
                        if (ckName == name)
                        {
                            isContain = true;
                            break;
                        }
                    }
                }
            }
        }

        return isContain;
    }//isContainCookie

    

        foreach (Cookie newCookie in cookiesToUpdate)
        {
            if (isContainCookie(newCookie, omitUpdateCookies))
            {
                // need omit process this
            }
            else
            {
                addCookieToCookies(newCookie, ref localCookies);
            }
        }