C# 操作COOKIES通用类[转]

using System;
using System.Web;

/// <summary>
/// Cookie 的摘要说明
/// </summary>
public class Cookie
{
     /// <summary>
     /// 创建Cookies
     /// </summary>
     /// <param name="strName">Cookie 主键</param>
     /// <param name="strValue">Cookie 键值</param>
     /// <param name="strDay">Cookie 天数</param>
     /// <code>Cookie ck = new Cookie();</code>
     /// <code>ck.setCookie("主键","键值","天数");</code>
     public bool setCookie(string strName, string strValue, int strDay)
     {
         try
         {
             HttpCookie Cookie = new HttpCookie(strName);
             Cookie.Expires = DateTime.Now.AddDays(strDay);
             Cookie.Value = strValue;
             System.Web.HttpContext.Current.Response.Cookies.Add(Cookie);
             return true;
         }
         catch
         {
             return false;
         }
     }

     /// <summary>
     /// 读取Cookies
     /// </summary>
     /// <param name="strName">Cookie 主键</param>
     /// <code>Cookie ck = new Cookie();</code>
     /// <code>ck.getCookie("主键");</code>
     public string getCookie(string strName)
     {
         HttpCookie Cookie = System.Web.HttpContext.Current.Request.Cookies[strName];
         if (Cookie != null)
         {
             return Cookie.Value.ToString();
         }
         else
         {
             return null;
         }
     }

     /// <summary>
     /// 删除Cookies
     /// </summary>
     /// <param name="strName">Cookie 主键</param>
     /// <code>Cookie ck = new Cookie();</code>
     /// <code>ck.delCookie("主键");</code>
     public bool delCookie(string strName)
     {
         try
         {
             HttpCookie Cookie = new HttpCookie(strName);
             Cookie.Expires = DateTime.Now.AddDays(-1);
             System.Web.HttpContext.Current.Response.Cookies.Add(Cookie);
             return true;
         }
         catch
         {
             return false;
         }
     }
}