cookie（C#）用法

protected void Button1_Click(object sender, EventArgs e)
{
HttpCookie cookie = new HttpCookie("name", TextBox1.Text);
cookie.Expires = DateTime.Now + new TimeSpan(0, 0, 5, 0);
Response.Cookies.Add(cookie);

}
protected void Page_Load(object sender, EventArgs e)
{
HttpCookie co = Request.Cookies["cookie"];
Label1.Text = co.Value;
}