public void CreateCookieOptions() { Microsoft.AspNetCore.Http.CookieOptions cookieOptions = new CookieOptions(); cookieOptions.HttpOnly = false; cookieOptions.Secure = false; Response.Cookies.Append("first", "", cookieOptions); cookieOptions = new CookieOptions() { HttpOnly = false, Secure = false }; Response.Cookies.Append("second", "", cookieOptions); Microsoft.Net.Http.Headers.SetCookieHeaderValue setCookieHeader = new Microsoft.Net.Http.Headers.SetCookieHeaderValue("obj"); setCookieHeader.HttpOnly = false; setCookieHeader.Secure = false; setCookieHeader = new Microsoft.Net.Http.Headers.SetCookieHeaderValue("assign") { HttpOnly = false, Secure = false }; HttpContext.Response.Headers.Add("SetCookie", setCookieHeader.ToString()); }