Cookies
这是存入Cookies代码
if (autoLogin)
{
HttpCookie newCookie = new HttpCookie("uid", uid.ToString());
newCookie.Expires = DateTime.Now.AddDays(10);
Response.AppendCookie(newCookie);
}
Response.End();
/////////////////////
这是获取Cookies代码
object uid = Request.Cookies["uid"].Value;
*****************别的方法************************
c#.net在WEB页中设置COOKIES
一、设置cookies的方法很简单,有以下两种方法:
1、直接添加Cookie值:
Response.Cookies["userName"] = "Tom";
Response.Cookies["userName"].Expires = DateTime.Now.AddDays(1) ; \\过期时间,在Cookies文件中无法查看,也不能调用.
2、创建Cookie对象的一个实例:
HttpCookie cookie=new HttpCookie("userName");
cookie.Value = "Tom";
cookie.Expires = DateTime.Now.AddDays(1) ;
Response.Cookies.Add(aCookie)
用以上任一方法都可以生成一个有“userName”项的文件, 在你的Internet临时文件夹中你可以查看它。
也可以创建和添加有子键的Cookies,如:
Response.Cookies["userInfo"]["userName"] = "Tom";
或:
HttpCookie cookie=new HttpCookie("userInfo");
cookie.Values["userName"] = "Tom";
aCookie.Expires = DateTime.Now.AddDays(1);
Response.Cookies.Add(aCookie)
二、检索Cookies:
Cookies某一键的值为:
Server.HtmlEncode(Request.Cookies["userInfo"]["userName"])
你可以用Response.Write()方法输出它到页面,如:
Response.Write(Server.HtmlEncode(Request.Cookies["userInfo"]["userName"]));
或赋值给其它变量:
string strCookie1=Server.HtmlEncode(Request.Cookies["userInfo"]["userName"]);
用Cookies[i]数组可以检索所有项和子键,如:
string[] cooName = new string[Request.Cookies.Count];
string[] cooValue = new string[Request.Cookies.Count];
HttpCookie aCookie;
for(int i=0;i<Request.Cookies.Count;i++){
aCookie = Request.Cookies[i];
cooName[i] = Server.HtmlEncode(aCookie.Name);
if(!aCookie.HasKeys){
cooValue[i] = Server.HtmlEncode(aCookie.Value);
}else{
string[] subcooName = new string[aCookie.Values.Count];
string[] subcooValue = new string[aCookie.Values.Count];
for(int j=0;j<aCookie.Values.Count;j++){
subcooName[j] = Server.HtmlEncode(aCookie.Values.AllKeys[j]);
subcooValue[j] = Server.HtmlEncode(aCookie.Values[j]);
}
}
}
三、修改Cookies
如果是数值类型的Cookie值,比如访问次数,你可以读取该值进行加减操作后再存回,一般的修改直接存入新值就可以了,系统自动用新值覆盖原值,存入的方法与创建相同。
四、删除Cookies
删除Cookies只要把有效期设为失效就可以了,如在创建时设有效期为一天:
cookie.Expires = DateTime.Now.AddDays(1) ;
要删除则设为:
cookie.Expires = DateTime.Now.AddDays(-1) ;
删除子键:
HttpCookie cookie;
cookie = Request.Cookies["userInfo"];
aCookie.Values.Remove("userName");
aCookie.Expires = DateTime.Now.AddDays(1);
Response.Cookies.Add(aCookie);