为什么我的cookie保存不下来

[wudilaile]

我定义了cookie在IE运行时能够取出值，当关闭IE再打开时此COOKIE并没有
保存下来，取值时为空，不存在
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'在此处放置初始化页的用户代码
Dim WelcomeIDCookie As New HttpCookie("user_ID")
WelcomeIDCookie.Value = DateTime.Today.ToString
WelcomeIDCookie.Expires = DateTime.Now().AddDays(182)
Response.Cookies.Add(WelcomeIDCookie)
Response.Write(WelcomeIDCookie.Value)

End Sub

[Abac]

Asp.net中Cookie简明参考
http://www.csdn.net/Develop/Read_Article.asp?Id=18922