Cookie辅助类 

 1     /// <summary>
 2     /// Cookie辅助类
 3     /// </summary>
 4     public class CookieHelper
 5     {
 6         /// <summary>
 7         /// 清除指定Cookie
 8         /// </summary>
 9         /// <param name="cookiename">cookiename</param>
10         public static void ClearCookie(string cookiename)
11         {
12             HttpCookie cookie = HttpContext.Current.Request.Cookies[cookiename];
13             if (cookie != null)
14             {
15                 cookie.Expires = DateTime.Now.AddYears(-3);
16                 HttpContext.Current.Response.Cookies.Add(cookie);
17             }
18         }
19 
20         /// <summary>
21         /// 获取指定Cookie值
22         /// </summary>
23         /// <param name="cookiename">cookiename</param>
24         /// <returns></returns>
25         public static string GetCookieValue(string cookiename)
26         {
27             HttpCookie cookie = HttpContext.Current.Request.Cookies[cookiename];
28             string str = string.Empty;
29             if (cookie != null)
30             {
31                 str = cookie.Value;
32             }
33             return str;
34         }
35 
36         /// <summary>
37         /// 添加一个Cookie（24小时过期）
38         /// </summary>
39         /// <param name="cookiename"></param>
40         /// <param name="cookievalue"></param>
41         public static void SetCookie(string cookiename, string cookievalue)
42         {
43             SetCookie(cookiename, cookievalue, DateTime.Now.AddDays(1.0));
44         }
45 
46         /// <summary>
47         /// 添加一个Cookie
48         /// </summary>
49         /// <param name="cookiename">cookie名</param>
50         /// <param name="cookievalue">cookie值</param>
51         /// <param name="expires">过期时间 DateTime</param>
52         public static void SetCookie(string cookiename, string cookievalue, DateTime expires)
53         {
54             HttpCookie cookie = new HttpCookie(cookiename)
55             {
56                 Value = cookievalue,
57                 Expires = expires
58             };
59             HttpContext.Current.Response.Cookies.Add(cookie);
60         }
61     }

 

posted @ 2016-09-23 08:59  百年明日能几何  阅读(174)  评论(0)    收藏  举报