关于cookie创建的问题

Question

Response.Cookies.Add(new   HttpCookie("名称",   值))

Answer 1

另:COOKIES操作时请注意.每次都最好先remove,再加,不然有时会引起存二个cookie

Answer 2

public partial class Cookies : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        
        
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
     //清除cookies
       // Request.Cookies..clear();
        //将cookies["username"]置空
        HttpCookie usercookie = Request.Cookies["username"];
       
       usercookie.Expires = System.DateTime.Now.AddDays(-10);
       // usercookie.Expires=.AddDays(-1.0);
        Response.Cookies.Add(usercookie);
    }    protected void Button2_Click(object sender, EventArgs e)
    {
//读取cookies
        HttpCookie mycookie = Request.Cookies["username"];
       
        Response.Write(mycookie.Value);
    }
    protected void Button3_Click(object sender, EventArgs e)
    {
//写入cookies
        HttpCookie usercookie = new HttpCookie("username", "test");
        //usercookie.Expires = System.DateTime.Now.AddMinutes(1);
        usercookie.Expires = System.DateTime.Now.AddDays(1);
        Response.Cookies.Add(usercookie);
    }
}