Provides a type-safe way to manipulate HTTP cookies.
(in System.Web.dll)
Visual Basic (Declaration)
<AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level := AspNetHostingPermissionLevel.Minimal)> _
Public NotInheritable Class HttpCookieCollection _
Inherits NameObjectCollectionBase
Dim instance As HttpCookieCollection
[AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
public sealed class HttpCookieCollection : NameObjectCollectionBase
[AspNetHostingPermissionAttribute(SecurityAction::LinkDemand, Level = AspNetHostingPermissionLevel::Minimal)]
public ref class HttpCookieCollection sealed : public NameObjectCollectionBase
public final class HttpCookieCollection extends NameObjectCollectionBase
The following code example demonstrates how to read cookies using the Cookies property of the HttpRequest object and write cookies using the Cookies property of the HttpResponse object. Both properties return HttpCookieCollection objects. If either of two cookies named userName and lastVisit are not in the HTTP request, then they are created in the HTTP response. If the two cookies exist, the properties of the cookies are displayed.
<%@ Page Language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
Dim sb As New StringBuilder()
' Check to see if cookies exist in HTTP request.
If (Request.Cookies("userName") Is Nothing AndAlso _
Request.Cookies("lastVisit") Is Nothing) Then
Response.Cookies("userName").Value = "user name"
Response.Cookies("userName").Expires = DateTime.Now.AddMinutes(20D)
Dim aCookie As HttpCookie
aCookie = New HttpCookie("lastVisit")
aCookie.Value = DateTime.Now.ToString()
aCookie.Expires = DateTime.Now.AddMinutes(20D)
Response.Cookies.Add(aCookie)
sb.Append("Two cookies added to response. " & _
"Refresh the page to read the cookies.")
Else
Dim cookies As HttpCookieCollection
cookies = Request.Cookies
For i As Integer = 0 To cookies.Count - 1
sb.Append("Name: " & cookies(i).Name & "<br/>")
sb.Append("Value: " & cookies(i).Value & "<br/>")
sb.Append("Expires: " & cookies(i).Expires.ToString() & _
"<br/><br/>")
Next
End If
Label1.Text = sb.ToString()
End Sub
</script>
<html >
<head runat="server">
<title>HttpCookieCollection Example</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label id="Label1" runat="server"></asp:Label>
</div>
</form>
</body>
</html>
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
protected void Page_Load(object sender, EventArgs e)
{
StringBuilder sb = new StringBuilder();
// Check to see if cookies exist in HTTP request.
if (Request.Cookies["userName"] == null &&
Request.Cookies["lastVist"] == null)
{
Response.Cookies["userName"].Value = "user name";
Response.Cookies["userName"].Expires = DateTime.Now.AddMinutes(20d);
HttpCookie aCookie = new HttpCookie("lastVisit");
aCookie.Value = DateTime.Now.ToString();
aCookie.Expires = DateTime.Now.AddMinutes(20d);
Response.Cookies.Add(aCookie);
sb.Append("Two cookies added to response. " +
"Refresh the page to read the cookies.");
}
else
{
HttpCookieCollection cookies = Request.Cookies;
for (int i = 0; i < cookies.Count; i++)
{
sb.Append("Name: " + cookies[i].Name + "<br/>");
sb.Append("Value: " + cookies[i].Value + "<br/>");
sb.Append("Expires: " + cookies[i].Expires.ToString() +
"<br/><br/>");
}
}
Label1.Text = sb.ToString();
}
</script>
<html >
<head runat="server">
<title>HttpCookieCollection Example</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label id="Label1" runat="server"></asp:Label>
</div>
</form>
</body>
</html>
System..::.Object
System.Collections.Specialized..::.NameObjectCollectionBase
System.Web..::.HttpCookieCollection
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
.NET Framework
Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
Reference
Other Resources