ASP.NET 쿠키 개요

쿠키 생성(쿠키 컬렉션)
HttpCookie regionCookies = new HttpCookie("interastRegion");

regionCookies.Values[si_DDL.SelectedValue] = dong_DDL.SelectedValue;
regionCookies.Expires = DateTime.Now.AddYears(1);

Response.Cookies.Add(regionCookies);

쿠키 호출(쿠키 컬렉션)
if (Request.Cookies["interastRegion"] != null)
{
     HttpCookie cookieItems = Request.Cookies["interastRegion"];

        if (cookieItems.HasKeys)
        {
            for (int i = 0; i < cookieItems.Values.Count; i++ )
           {
               regionCookies.Values[cookieItems.Values.AllKeys[i]] = cookieItems.Values[i];
           }
        }
}

참고 사이트(키워드) : http://msdn.microsoft.com/ko-kr/library/ms178194(v=VS.80).aspx (ASP.NET 쿠키 개요)