C#自定义简化cookie类实例

本文实例讲述了c#自定义简化cookie类。分享给大家供大家参考。具体分析如下：

这个c#类封装了常用的cookie操作，包括读取cookie、写入cookie、设置cookie过期时间等等。

using system;
using system.web;
namespace dotnet.utilities
{
 public class cookiehelper
 {
  /// <summary>
  /// 清除指定cookie
  /// </summary>
  /// <param name="cookiename">cookiename</param>
  public static void clearcookie(string cookiename)
  {
   httpcookie cookie = httpcontext.current.request.cookies[cookiename];
   if (cookie != null)
   {
    cookie.expires = datetime.now.addyears(-3);
    httpcontext.current.response.cookies.add(cookie);
   }
  }
  /// <summary>
  /// 获取指定cookie值
  /// </summary>
  /// <param name="cookiename">cookiename</param>
  /// <returns></returns>
  public static string getcookievalue(string cookiename)
  {
   httpcookie cookie = httpcontext.current.request.cookies[cookiename];
   string str = string.empty;
   if (cookie != null)
   {
    str = cookie.value;
   }
   return str;
  }
  /// <summary>
  /// 添加一个cookie（24小时过期）
  /// </summary>
  /// <param name="cookiename"></param>
  /// <param name="cookievalue"></param>
  public static void setcookie(string cookiename, string cookievalue)
  {
   setcookie(cookiename, cookievalue, datetime.now.adddays(1.0));
  }
  /// <summary>
  /// 添加一个cookie
  /// </summary>
  /// <param name="cookiename">cookie名</param>
  /// <param name="cookievalue">cookie值</param>
  /// <param name="expires">过期时间 datetime</param>
  public static void setcookie(string cookiename, string cookievalue,datetime expires)
  {
   httpcookie cookie = new httpcookie(cookiename)
   {
    value = cookievalue,
    expires = expires
   };
   httpcontext.current.response.cookies.add(cookie);
  }
 }
}

希望本文所述对大家的c#程序设计有所帮助。