public HomeController(IHttpContextAccessor httpContextAccessor) { this._httpContextAccessor = httpContextAccessor; service = new DataRetrievalService(); ivm = new IndexViewModel(); string userid = httpContextAccessor.HttpContext.Request.Cookies["userCookie"]; if (userid == null || userid == "") { if (httpContextAccessor.HttpContext.Request.Cookies["sessionCookie"] == null || httpContextAccessor.HttpContext.Request.Cookies["sessionCookie"] == "" || httpContextAccessor.HttpContext.Request.Cookies["sessionCookie"].Length <= 5) { string guid = Guid.NewGuid().ToString(); CookieOptions session = new CookieOptions { Expires = DateTime.Now.AddDays(1) }; httpContextAccessor.HttpContext.Response.Cookies.Append("sessionCookie", guid, session); Carts c = new Carts { Guid = guid }; if (service.CreateCart(c)) { ivm.Guid = guid; } } else { CookieOptions session = new CookieOptions { Expires = DateTime.Now.AddDays(1) }; httpContextAccessor.HttpContext.Response.Cookies.Append("sessionCookie", service.GetCartByUserId(int.Parse(userid)).Guid, session); } } }