在程序中使用Cookie集合(定义/新建/删除)及案例讲解

时间:2022-09-17 22:00:13

在程序开发中,使用Cookie时,很少使用如http://www.zzvips.com/article/20644.html的写法。习惯写成Cookie集合,什么叫做Cookie集合,即是说一个Cookie,它拥有多个值。下面一系列演示,是怎样创建Cookie集合与使用。 

复制代码代码如下:


InsusBiz 
using System; 
using System.Web; 
/// <summary> 
/// Summary description for InsusBiz 
/// </summary> 
public class InsusBiz 

private static HttpResponse Response 

get 

return HttpContext.Current.Response; 


private static HttpRequest Request 

get 

return HttpContext.Current.Request; 


//定义一个Cookie集合 
private static HttpCookie InsusCookie 

get 

return Request.Cookies["InsusCookie"] as HttpCookie; 

set 

if (Request.Cookies["InsusCookie"] != null) 

Request.Cookies.Remove("InsusCookie"); 

Response.Cookies.Add(value); 


//New Cookie集合 
private static HttpCookie NewInsusCookie 

get 

HttpCookie httpCookie = new HttpCookie("InsusCookie"); 
return httpCookie; 


//Remove Cookie集合 
public static void RemoveInsusCookie() 

if (InsusCookie == null) 
Response.Cookies.Remove("InsusCookie"); 
else 
Response.Cookies["InsusCookie"].Expires = DateTime.Now.AddDays(-1); 

//创建一个Cookie,判断用户登录状态 
public static bool LoginOk 

get 

return InsusCookie == null ? false : bool.Parse(InsusCookie.Values["LoginOk"]); 

set 

HttpCookie httpCookie = InsusCookie == null ? NewInsusCookie : InsusCookie; 
httpCookie.Values["LoginOk"] = value.ToString(); 
InsusCookie = httpCookie; 


//创建登录用户的帐号,整站使用 
public static string MemberId 

get 

return InsusCookie == null ? string.Empty : InsusCookie.Values["MemberId"]; 

set 

HttpCookie httpCookie = InsusCookie == null ? NewInsusCookie : InsusCookie; 
httpCookie.Values["MemberId"] = value; 
InsusCookie = httpCookie; 


//如果还有整站使用的Cookie可以写在此,可以参考LoginOK或MemberId的写法。 


在应用时,你会看到InsusBiz类别下有LoginOk,MemberId和RemoveInsusCookie等属性: 
在程序中使用Cookie集合(定义/新建/删除)及案例讲解 
在程序中怎样使用这些cookie呢?如在登录验证成功之后,你需要把登录状态与登录的ID写入Cookie中 
InsusBiz.LoginOk = true; 
InsusBiz.MemberId = xxx; 
在判断用户是否登录时,可以这个去判断: 

复制代码代码如下:


protected void Page_Load(object sender, EventArgs e) 

if (!InsusBiz.LoginOk) 

//你没有登录 


如果想在任何位置,想取出登录ID: 

复制代码代码如下:


string memberId = InsusBiz.MemberId; 


最后想说的,你想移除Cooke,就可以使用InsusBiz.RemoveInsusCookie就可以了,因为它会把Cookie的过期时间变更为过去。这个通常应用在用户Sign out的事件上。