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)
{
string value = GetCookieValue(cookieName, null);
if (!string.IsNullOrEmpty(value))
{
value = value.Replace("&^%HH123sdfa", ";");
}
return value;
}

/// <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>
/// 设置Cookie失效
/// </summary>
public static void DeleteCookie(string cookieName)
{
CookiesHelper.SetCookie(cookieName, DateTime.Now.AddDays(-1));
}

/// <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)
{
if (!string.IsNullOrEmpty(value))
{
value = value.Replace(";", "&^%HH123sdfa");
}
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
}