Cookie对象的使用

写入Cookie的方法

方法1

Response.Cookies["userName"].Value = "patrick";
Response.Cookies["userName"].Expires = DateTime.Now.AddDays(5);

方法2

HttpCookie MyCookie = new HttpCookie("MyCookie");
MyCookie.Value = Server.HtmlEncode("一个Cookie应用程序");//设置Cookie的值
MyCookie.Expires = DateTime.Now.AddDays(5);//设置Cookie过期时间
Response.Cookies.Add(MyCookie);//新增Cookie

方法3

HttpCookie MyCookie = new HttpCookie("MyCookie");
MyCookie.Value = Server.HtmlEncode("一个Cookie应用程序");//设置Cookie的值
MyCookie.Expires = DateTime.Now.AddDays(5);//设置Cookie过期时间
Response.AppendCookie(MyCookie);

获取名为username的Cookie的值，并将其像是在label控件中

方法1

if (Request.Cookies["username"] != null)
    label1.Text = Server.HtmlEncode(Request.Cookies["username"].Value);

方法2

if (Request.Cookies["username"] != null)
{
    HttpCookie MyCookie = Request.Cookies["username"];
    label1.Text = Server.HtmlEncode(MyCookie.Value);
}