文章來源:http://blog.csdn.net/chinajiyong/article/details/7569881
一般ASP.NET中Cookie的存儲有兩種方法,一種是直接爲Cookie集合設置Cookie屬性。第二種是創建HttpCookie對象的一個實例並將該實例添加到Cookie集合中,當然讀取就很簡單了。
(一)、Cookie的存儲
(1)、通過Response對象的Cookie集合存儲。語法格式:
- Response.Cookies["Cookie的名稱"].Value=變量值;
例如:
- Response.Cookies["UserName"].Value=“Chinajiyong“;
(2)、通過HttpCookie對象的實例存儲。語法格式:
- HttpCookie cookie=new HttpCookie("Cookie名稱","值");
- Response.Cookies.Add(cookie);
或者
- HttpCookie cookie=new HttpCookie("Cookie名稱");
- cookie.Value="值";
- Response.Cookies.Add(cookie);
例如:
- HttpCookie cookie=new HttpCookie("UserName","Chinajiyong");
- Response.Cookies.Add(cookie);
或者
- HttpCookie cookie=new HttpCookie("UserName");
- cookie.Value="Chinajiyong";
- Response.Cookies.Add(cookie);
除了上述方法存儲Cookie之外,還可以進行多值Cookie的存儲,
方法一:
- Response.Cookies["LoginInfo"]["UserName"].Value=“Chinajiyong“;
- Response.Cookies["LoginInfo"]["Password"].Value=“12345“;
方法二:
- HttpCookie cookie=new HttpCookie("LoginInfo");
- cookie.Values["UserName"]="Chinajiyong";
- cookie.Values["Password"]="12345";
- Response.Cookies.Add(cookie);
(2)、讀取Cookie方法
- if(Request.Cookies["UserName"]!=null)
- {
- string username=Request.Cookies("UserName").Value;
- }
對於多值的Cookie的讀取
- if(Request.Cookies["LoginInfo"]!=null)
- {
- string username=Request.Cookies["LoginInfo"]["UserName"];
- string password=Request.Cookies["LoginInfo"]["Password"];
- }
總之,在獲取Cookie值之前,應該確保該Cookie確實存在,否則將得到一個異常。