I implement output cache in page but its conflict with base page. In base page I add cookie in preint event
HttpCookie currCookie = new HttpCookie("CurrencyId", "3");
currCookie.Expires = DateTime.Now.AddDays(1);
Response.Cookies.Add(currCookie);
Request.Cookies.Set(currCookie);
if i comment Response.Cookies.Add(currCookie) line output cache works but if not outputcache not working