asp.net cookie类程序代码

作者：袖梨 2022-06-25
 代码如下 复制代码
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
{
    ///
    /// Cookie操作类
    ///
    public class CookieHelper
    {
        #region 保存Cookie
        ///
        /// 保存Cookie
        ///
        /// Cookie名称
        /// Cookie值
        /// Cookie过期时间(小时),0为关闭页面失效
        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
        ///
        /// 取得Cookie
        ///
        /// Cookie名称
        /// Cookie的值
        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
        ///
        /// 清除Cookie
        ///
        /// Cookie名称
        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
    }
}

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