COOKIES IN ASP.NET

protected void Page_Load(object sender, EventArgs e)
{

TextBox1.Text = "Ajith";
TextBox2.Text = "bmw";
HttpCookie usercars = Request.HttpCookie["favouritecar"];
if(usecookie == null)
{

HttpCookie usecar = new HttpCookie("favouritecar");
 usecar["name"] = TextBox1.Text.ToString();
 usecar["car"] = TextBox2.Text.ToString();
 usecar.Expires.DateTime.Now.AddDays(1);
Response.Cookie.Add(usecar);

}
else
{

String name =usercars["name"];
String car = usercars["car"];
Label1.Text =  "hi" + name + "is using" +car ;

}
}
}