//create a cookie container CookieContainer cookieContainer = new CookieContainer(); //create a new cookie Cookie mycookie = new Cookie("username", "JohnDoe"); //add the cookie to the container cookieContainer.Add(mycookie);
//create a new HTTP client HttpClient client = new HttpClient(); //create a new cookie container CookieContainer cookieContainer = new CookieContainer(); //add the cookie container to the HTTP client clientHandler.CookieContainer = cookieContainer; //send a get request with the cookie container HttpResponseMessage response = await client.GetAsync("https://example.com");Based on the namespace "System.Net", the CookieContainer is likely included in the .NET Framework class library.