CookieContainer

public class CookieContainer : ICookieContainer
{
    private readonly HttpRequestBase _request;
    private readonly HttpResponseBase _response;

    public CookieContainer(HttpRequestBase request, HttpResponseBase response)
    {
        // "Check" is a helper class, I've got from the "Kigg" project
        Check.IsNotNull(request, "request");
        Check.IsNotNull(response, "response");

        _request = request;
        _response = response;
    }

    public string GetValue(string key)
    {
        Check.IsNotEmpty(key, "key");

        HttpCookie cookie = _request.Cookies[key];
        return cookie != null ? cookie.Value : null;
    }

    public void SetValue(string key, object value, DateTime expires)
    {
        Check.IsNotEmpty(key, "key");

        string strValue = CheckAndConvertValue(value);

        HttpCookie cookie = new HttpCookie(key, strValue) {Expires = expires};
        _response.Cookies.Set(cookie);
    }
    
    // ... see code sample for full implementation
}