asp.net下cookies操作完美代码

代码如下:

using System; 
using System.Web; 
namespace Moosoft.OA.Public 
{ 
/// <summary> 
/// Cookie帮助类 
/// </summary> 
public class CookiesHelper 
{ 
#region 获取Cookie 
/// <summary> 
/// 获得Cookie的值 
/// </summary> 
/// <param name="cookieName"></param> 
/// <returns></returns> 
public static string GetCookieValue(string cookieName) 
{ 
return GetCookieValue(cookieName, null); 
} 
/// <summary> 
/// 获得Cookie的值 
/// </summary> 
/// <param name="cookieName"></param> 
/// <param name="key"></param> 
/// <returns></returns> 
public static string GetCookieValue(string cookieName, string key) 
{ 
HttpRequest request = HttpContext.Current.Request; 
if (request != null) 
return GetCookieValue(request.Cookies[cookieName], key); 
return ""; 
} 
/// <summary> 
/// 获得Cookie的子键值 
/// </summary> 
/// <param name="cookie"></param> 
/// <param name="key"></param> 
/// <returns></returns> 
public static string GetCookieValue(HttpCookie cookie, string key) 
{ 
if (cookie != null) 
{ 
if (!string.IsNullOrEmpty(key) && cookie.HasKeys) 
return cookie.Values[key]; 
else 
return cookie.Value; 
} 
return ""; 
} 
/// <summary> 
/// 获得Cookie 
/// </summary> 
/// <param name="cookieName"></param> 
/// <returns></returns> 
public static HttpCookie GetCookie(string cookieName) 
{ 
HttpRequest request = HttpContext.Current.Request; 
if (request != null) 
return request.Cookies[cookieName]; 
return null; 
} 
#endregion 
#region 删除Cookie 
/// <summary> 
/// 删除Cookie 
/// </summary> 
/// <param name="cookieName"></param> 
public static void RemoveCookie(string cookieName) 
{ 
RemoveCookie(cookieName, null); 
} 
/// <summary> 
/// 删除Cookie的子键 
/// </summary> 
/// <param name="cookieName"></param> 
/// <param name="key"></param> 
public static void RemoveCookie(string cookieName, string key) 
{ 
HttpResponse response = HttpContext.Current.Response; 
if (response != null) 
{ 
HttpCookie cookie = response.Cookies[cookieName]; 
if (cookie != null) 
{ 
if (!string.IsNullOrEmpty(key) && cookie.HasKeys) 
cookie.Values.Remove(key); 
else 
response.Cookies.Remove(cookieName); 
} 
} 
} 
#endregion 
#region 设置/修改Cookie 
/// <summary> 
/// 设置Cookie子键的值 
/// </summary> 
/// <param name="cookieName"></param> 
/// <param name="key"></param> 
/// <param name="value"></param> 
public static void SetCookie(string cookieName, string key, string value) 
{ 
SetCookie(cookieName, key, value, null); 
} 
/// <summary> 
/// 设置Cookie值 
/// </summary> 
/// <param name="key"></param> 
/// <param name="value"></param> 
public static void SetCookie(string key, string value) 
{ 
SetCookie(key, null, value, null); 
} 
/// <summary> 
/// 设置Cookie值和过期时间 
/// </summary> 
/// <param name="key"></param> 
/// <param name="value"></param> 
/// <param name="expires"></param> 
public static void SetCookie(string key, string value, DateTime expires) 
{ 
SetCookie(key, null, value, expires); 
} 
/// <summary> 
/// 设置Cookie过期时间 
/// </summary> 
/// <param name="cookieName"></param> 
/// <param name="expires"></param> 
public static void SetCookie(string cookieName, DateTime expires) 
{ 
SetCookie(cookieName, null, null, expires); 
} 
/// <summary> 
/// 设置Cookie 
/// </summary> 
/// <param name="cookieName"></param> 
/// <param name="key"></param> 
/// <param name="value"></param> 
/// <param name="expires"></param> 
public static void SetCookie(string cookieName, string key, string value, DateTime? expires) 
{ 
HttpResponse response = HttpContext.Current.Response; 
if (response != null) 
{ 
HttpCookie cookie = response.Cookies[cookieName]; 
if (cookie != null) 
{ 
if (!string.IsNullOrEmpty(key) && cookie.HasKeys) 
cookie.Values.Set(key, value); 
else 
if (!string.IsNullOrEmpty(value)) 
cookie.Value = value; 
if (expires != null) 
cookie.Expires = expires.Value; 
response.SetCookie(cookie); 
} 
} 
} 
#endregion 
#region 添加Cookie 
/// <summary> 
/// 添加Cookie 
/// </summary> 
/// <param name="key"></param> 
/// <param name="value"></param> 
public static void AddCookie(string key, string value) 
{ 
AddCookie(new HttpCookie(key, value)); 
} 
/// <summary> 
/// 添加Cookie 
/// </summary> 
/// <param name="key"></param> 
/// <param name="value"></param> 
/// <param name="expires"></param> 
public static void AddCookie(string key, string value, DateTime expires) 
{ 
HttpCookie cookie = new HttpCookie(key, value); 
cookie.Expires = expires; 
AddCookie(cookie); 
} 
/// <summary> 
/// 添加为Cookie.Values集合 
/// </summary> 
/// <param name="cookieName"></param> 
/// <param name="key"></param> 
/// <param name="value"></param> 
public static void AddCookie(string cookieName, string key, string value) 
{ 
HttpCookie cookie = new HttpCookie(cookieName); 
cookie.Values.Add(key, value); 
AddCookie(cookie); 
} 
/// <summary> 
/// 添加为Cookie集合 
/// </summary> 
/// <param name="cookieName">Cookie名称</param> 
/// <param name="expires">过期时间</param> 
public static void AddCookie(string cookieName, DateTime expires) 
{ 
HttpCookie cookie = new HttpCookie(cookieName); 
cookie.Expires = expires; 
AddCookie(cookie); 
} 
/// <summary> 
/// 添加为Cookie.Values集合 
/// </summary> 
/// <param name="cookieName"></param> 
/// <param name="key"></param> 
/// <param name="value"></param> 
/// <param name="expires"></param> 
public static void AddCookie(string cookieName, string key, string value, DateTime expires) 
{ 
HttpCookie cookie = new HttpCookie(cookieName); 
cookie.Expires = expires; 
cookie.Values.Add(key, value); 
AddCookie(cookie); 
} 
/// <summary> 
/// 添加Cookie 
/// </summary> 
/// <param name="cookie"></param> 
public static void AddCookie(HttpCookie cookie) 
{ 
HttpResponse response = HttpContext.Current.Response; 
if (response != null) 
{ 
//指定客户端脚本是否可以访问[默认为false] 
cookie.HttpOnly = true; 
//指定统一的Path，比便能通存通取 
cookie.Path = "/"; 
//设置跨域,这样在其它二级域名下就都可以访问到了 
//cookie.Domain = "chinesecoo.com"; 
response.AppendCookie(cookie); 
} 
} 
#endregion 
} 
}