讀取Cookies與序列化對象

 

ASP.NET讀取Cookies

// 將搜尋條件寫入Cookies
        private void WriteConCookie(JobOfferQuery offerQuery)
        {
            HttpCookie cookie = new HttpCookie("JobOfferQueryCondition");
            cookie.Expires = DateTime.Now.AddHours(1);
            cookie.Values["name"] = User.Identity.Name;
            cookie.Values["condition"] = SerializeJobOfferQuery(offerQuery);
            Response.Cookies.Add(cookie);
        }

// 將搜尋條件從Cookies中讀出來
        private JobOfferQuery ReadConCookie()
        {
try
            {
                HttpCookie cookie = Request.Cookies["JobOfferQueryCondition"];

if (cookie.Values["name"] == User.Identity.Name)
                {
return DeserializeJobOfferQuery(cookie.Values["condition"]);
                }
            }
catch (Exception ex)
            {}
return null;
        }

 

 

序列化與還原序列化對象
        // 序列化對象
        private string SerializeJobOfferQuery(JobOfferQuery offerQuery)
        {
            DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(JobOfferQuery));
            MemoryStream ms = new MemoryStream();
            serializer.WriteObject(ms, offerQuery);
string json = Encoding.UTF8.GetString(ms.ToArray());
            ms.Close();
return json;
        }


// 還原序列化對象
        private JobOfferQuery DeserializeJobOfferQuery(string str)
        {
            DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(JobOfferQuery));
            MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(str));
try
            {
                JobOfferQuery offerQuery = serializer.ReadObject(ms) as JobOfferQuery;
return offerQuery;
            }
catch (Exception ex)
            {
return null;
            }
finally
            {
                ms.Close();
            }            
        }