var cookie = new HttpCookie("member");
cookie.Values.Add("memberName", name);
cookie.Values.Add("memberType", type.ToString());
cookie.Expires = DateTime.Now.AddDays(30);
Response.Cookies.Add(cookie); 

 var cookie = Request.Cookies["member"];
 if (cookie != null)
{ 
     string name = cookie.Values["memberName"]; 
     string type=cookie.Values["memberType"]; 

} 

var cookie = Request.Cookies["member"];
            if (cookie != null)
            {
                cookie.Expires = DateTime.Now.AddDays(-1);
                Response.Cookies.Add(cookie);
            }