Cookies的读取、写入、有效期设置

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protected
void Page_Load(object
sender, EventArgs e)

{

    //设置Cookies

    HttpCookie cookie = new
HttpCookie("UserName","ZhangSan");

    this.Request.Cookies.Add(cookie);

    //设置Cookies有效期

    DateTime time = DateTime.Now;

    TimeSpan span = new
TimeSpan(0, 0, 15, 0, 0);//时间间隔

    cookie.Expires = time.Add(span);//设置有效期为15分钟

    //读取Cookies

    string
userName = this.Request.Cookies[0].Value;

    this.Response.Write(userName);

    //写入Cookies

    this.Response.SetCookie(cookie);

}