一个好用的C# HttpCookieHelper.cs类

  using System;
 using System.Collections.Generic;
 using System.Text;
 using System.Text.RegularExpressions;  

 namespace DotNet.Utilities
 {
      /// <summary>
     /// Cookie操作帮助类
     /// </summary>
     public static class HttpCookieHelper
     {
         /// <summary>
         /// 根据字符生成Cookie列表
         /// </summary>
         /// <param name="cookie">Cookie字符串</param>
         /// <returns></returns>
         public static List<CookieItem> GetCookieList(string cookie)
         {
             List<CookieItem> cookielist = new List<CookieItem>();
             foreach (string item in cookie.Split(new string[] { ";", "," }, StringSplitOptions.RemoveEmptyEntries))
             {
                 if (Regex.IsMatch(item, @"([\s\S]*?)=([\s\S]*?)$"))
                 {
                     Match m = Regex.Match(item, @"([\s\S]*?)=([\s\S]*?)$");
                     cookielist.Add(new CookieItem() { Key = m.Groups[].Value, Value = m.Groups[].Value });
                 }
             }
             return cookielist;
         }  

         /// <summary>
         /// 根据Key值得到Cookie值,Key不区分大小写
         /// </summary>
         /// <param name="Key">key</param>
         /// <param name="cookie">字符串Cookie</param>
         /// <returns></returns>
         public static string GetCookieValue(string Key, string cookie)
         {
             foreach (CookieItem item in GetCookieList(cookie))
             {
                 if (item.Key == Key)
                     return item.Value;
             }
             return "";
         }
         /// <summary>
         /// 格式化Cookie为标准格式
         /// </summary>
         /// <param name="key">Key值</param>
         /// <param name="value">Value值</param>
         /// <returns></returns>
         public static string CookieFormat(string key, string value)
         {
             return string.Format("{0}={1};", key, value);
         }
     }  

     /// <summary>
     /// Cookie对象
     /// </summary>
     public class CookieItem
     {
         /// <summary>
         /// 键
         /// </summary>
         public string Key { get; set; }
         /// <summary>
         /// 值
         /// </summary>
         public string Value { get; set; }
     }
 }