在ASP+中使用Cookie

作者： unknow

<%@ Page Language="VB" %>

<script language="VB" runat="server">
Const COOKIE_NAME As String = "test-cookie-name"
Const COOKIE_VALUE As String = "test-cookie-value"

@# Declare our cookie object
Dim objCookieObject As HttpCookie

Sub btnSetCookie_OnClick(Sender As Object, E As EventArgs)
@# Create a cookie object - I@#m passing name and value,
@# but you can also pass in a name and set the value later.
@# ie. objCookieObject = New HttpCookie(COOKIE_NAME)
objCookieObject = New HttpCookie(COOKIE_NAME, COOKIE_VALUE)

@# We already set these above!
@#objCookieObject.Name = COOKIE_NAME
@#objCookieObject.Value = COOKIE_VALUE

@# Additional cookie properties:
objCookieObject.Expires = New DateTime(2001, 12, 31, 23, 59, 59)

@# Normally you can leave these alone.
@# The defaults will work fine for most uses.
@#objCookieObject.Domain = "www.domain.com"
@#objCookieObject.Path = "/path/"
@#objCookieObject.Secure = True

Response.AppendCookie(objCookieObject)
End Sub

Sub btnRemoveCookie_OnClick(Sender As Object, E As EventArgs)
objCookieObject = New HttpCookie(COOKIE_NAME)

@# Expire it on the day I was born just so we@#re sure it@#s a date in the past.
objCookieObject.Expires = New DateTime(1974, 11, 12)

Response.AppendCookie(objCookieObject)
End Sub

Sub btnGetCookie_OnClick(Sender As Object, E As EventArgs)
objCookieObject = Request.Cookies(COOKIE_NAME)

If Not(objCookieObject = null) Then
lblCookieDetails.Text = objCookieObject.Name

lblCookieDetailsName.Text = objCookieObject.Name
lblCookieDetailsValue.Text = objCookieObject.Value
lblCookieDetailsExpires.Text = objCookieObject.Expires.ToString
lblCookieDetailsDomain.Text = objCookieObject.Domain
lblCookieDetailsPath.Text = objCookieObject.Path
lblCookieDetailsSecure.Text = objCookieObject.Secure.ToString
lblCookieDetailsHasKeys.Text = objCookieObject.HasKeys.ToString
Else
lblCookieDetails.Text = "Cookie Not Set!"

lblCookieDetailsName.Text = ""
lblCookieDetailsValue.Text = ""
lblCookieDetailsExpires.Text = ""
lblCookieDetailsDomain.Text = ""
lblCookieDetailsPath.Text = ""
lblCookieDetailsSecure.Text = ""
lblCookieDetailsHasKeys.Text = ""
End If

@# I@#m ignoring collections. They@#re outside the realm of this basic sample.
@# FYI: Additional properties related to cookie collections: Values, Item
End Sub
</script>

<html>
<body>

<h4>The cookie name we@#re using for this sample is: <em><%= COOKIE_NAME %></em></h4>

<form action="cookies.aspx" method="post" runat="server">
<asp:Button type="submit" id="btnSetCookie" text="Set Cookie" OnClick="btnSetCookie_OnClick"
runat="server" />
<asp:Button type="submit" id="btnRemoveCookie" text="Remove Cookie"
OnClick="btnRemoveCookie_OnClick" runat="server" />

<p>
To see the cookie@#s current status you@#ll need to click below. This is because the response
which adds or deletes the cookie happens after the request is already done. As such, those changes aren@#t
available from the request collection until the next request.
</p>

<asp:Button type="submit" id="btnGetCookie" text="Get Cookie Details"
OnClick="btnGetCookie_OnClick" runat="server" />
</form>

<p>
<strong>Details of:</strong> <asp:label id="lblCookieDetails" runat="server" />
</p>

<table border="1">
<thead>
<tr>
<th>Property</th>
<th>Value</th>
</tr>
</thead>
<tbody>
<tr>
<td>Name</td>
<td><asp:label id="lblCookieDetailsName" runat="server" /></td>
</tr>
<tr>
<td>Value</td>
<td><asp:label id="lblCookieDetailsValue" runat="server" /></td>
</tr>
<tr>
<td>Expires</td>
<td><asp:label id="lblCookieDetailsExpires" runat="server" /></td>
</tr>
<tr>
<td>Domain</td>
<td><asp:label id="lblCookieDetailsDomain" runat="server" /></td>
</tr>
<tr>
<td>Path</td>
<td><asp:label id="lblCookieDetailsPath" runat="server" /></td>
</tr>
<tr>
<td>Secure</td>
<td><asp:label id="lblCookieDetailsSecure" runat="server" /></td>
</tr>
<tr>
<td>Has Keys</td>
<td><asp:label id="lblCookieDetailsHasKeys" runat="server" /></td>
</tr>
</tbody>
</table>

</body>
</html>

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