asp.net cookie類程式碼

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複製代碼

using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.IO; using System.Runtime.Serialization; using System.Runtime.Serialization.Formatters.Binary; using System.Web.Security; using System.Web.UI; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; using System.Data; using System.Configuration; namespace Bll {     /// <summary>     /// Cookie操作類     /// </summary>     public class CookieHelper     {         #region 儲存Cookie         /// <summary>         /// 儲存Cookie         /// </summary>         /// <param name="CookieName">Cookie名稱</param>         /// <param name="CookieValue">Cookie值</param>         /// <param name="CookieTime">Cookie到期時間(小時),0為關閉頁面失效</param>         public static void SaveCookie(string CookieName, object CookieValue, double CookieTime)         {             HttpCookie myCookie = new HttpCookie(CookieName);             DateTime now = DateTime.Now;             myCookie.Value = ConvertObjectToString(CookieValue);             if (CookieTime != 0)                 myCookie.Expires = now.AddHours(CookieTime);             if (HttpContext.Current.Response.Cookies[CookieName] != null)                 HttpContext.Current.Response.Cookies.Remove(CookieName);             HttpContext.Current.Response.Cookies.Add(myCookie);         }         private static string ConvertObjectToString(object CookieValue)         {             BinaryFormatter bf = new BinaryFormatter();             MemoryStream ms = new MemoryStream();             bf.Serialize(ms, CookieValue);             byte[] result = new byte[ms.Length];             result = ms.ToArray();             string temp = System.Convert.ToBase64String(result);             ms.Flush();             ms.Close();             return temp;         }         #endregion         #region 取得Cookie         /// <summary>         /// 取得Cookie         /// </summary>         /// <param name="CookieName">Cookie名稱</param>         /// <returns>Cookie的值</returns>         public static object GetCookie(string CookieName)         {             HttpCookie myCookie = new HttpCookie(CookieName);             myCookie = HttpContext.Current.Request.Cookies[CookieName];             if (myCookie != null)                 return ConvertStringToObject(myCookie.Value);             else                 return null;         }         private static object ConvertStringToObject(string value)         {             byte[] b = System.Convert.FromBase64String(value);             MemoryStream ms = new MemoryStream(b, 0, b.Length);             BinaryFormatter bf = new BinaryFormatter();             return bf.Deserialize(ms);         }         #endregion         #region 清除Cookie         /// <summary>         /// 清除Cookie         /// </summary>         /// <param name="CookieName">Cookie名稱</param>         public static void ClearCookie(string CookieName)         {             HttpCookie myCookie = new HttpCookie(CookieName);             DateTime now = DateTime.Now;             myCookie.Expires = now.AddYears(-2);             HttpContext.Current.Response.Cookies.Add(myCookie);         }         #endregion     } }