[C#] 简单的 Helper 封装 -- CookieHelper

 using System;
 using System.Web;

 namespace ConsoleApplication5
 {
     /// <summary>
     /// Cookie 助手
     /// </summary>
     public sealed class CookieHelper
     {
         /// <summary>
         /// 添加一个 Cookie
         /// </summary>
         /// <param name="name">名</param>
         /// <param name="value">值</param>
         public static void Add(string name, string value)
         {
             var cookie = new HttpCookie(name, value);

             HttpContext.Current.Response.Cookies.Add(cookie);
         }

         /// <summary>
         /// 添加一个 Cookie
         /// </summary>
         /// <param name="name">名</param>
         /// <param name="value">值</param>
         /// <param name="expires">过期日期和时间</param>
         public static void Add(string name, string value, DateTime expires)
         {
             var cookie = new HttpCookie(name, value)
             {
                 Expires = expires
             };

             HttpContext.Current.Response.Cookies.Add(cookie);
         }

         /// <summary>
         /// 获取 Cookie 值
         /// </summary>
         /// <param name="name">名</param>
         /// <returns></returns>
         public static string Get(string name)
         {
             var cookie = HttpContext.Current.Request.Cookies[name];

             return cookie == null ? string.Empty : cookie.Value;
         }
     }
 }