HttpCookie Class

Provides a type-safe way to create and manipulate individual HTTP cookies.

Namespace: System.Web
Assembly: System.Web (in system.web.dll)

Public NotInheritable Class HttpCookie
Dim instance As HttpCookie

public final class HttpCookie
public final class HttpCookie

The HttpCookie class gets and sets properties of individual cookies. The HttpCookieCollection class provides methods to store, retrieve, and manage multiple cookies.

ASP.NET includes two intrinsic cookie collections. The collection accessed through the Cookies collection of the HttpRequest object contains cookies transmitted by the client to the server in the Cookie header. The collection accessed through the Cookies collection of the HttpResponse object contains new cookies created on the server and transmitted to the client in the Set-Cookie HTTP response header.

How to: Write a CookieBuilding ASP .NET Web Applications
How to: Write a CookieBuilding ASP .NET Web Applications

The following code example demonstrates how to check for a cookie named DateCookieExample in the HttpRequest object. If the cookie is not found, it is created and added to the HttpResponse object. The cookie is set to expire in 10 minutes.

<%@ Page Language="VB" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "">

<script runat="server">

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
        Dim sb As New StringBuilder()
        ' Get cookie from current request.
        Dim cookie As HttpCookie
        cookie = Request.Cookies.Get("DateCookieExample")
        ' Check if cookie exists in the current request
        If (cookie Is Nothing) Then
            sb.Append("Cookie was not received from the client. ")
            sb.Append("Creating cookie to add to the response. <br/>")
            ' Create cookie.
            cookie = New HttpCookie("DateCookieExample")
            ' Set value of cookie to current date time.
            cookie.Value = DateTime.Now.ToString()
            ' Set cookie to expire in 10 minutes.
            cookie.Expires = DateTime.Now.AddMinutes(10D)
            ' Insert the cookie in the current HttpResponse.
            sb.Append("Cookie retrieved from client. <br/>")
            sb.Append("Cookie Name: " + cookie.Name + "<br/>")
            sb.Append("Cookie Value: " + cookie.Value + "<br/>")
            sb.Append("Cookie Expiration Date: " & _
                cookie.Expires.ToString() & "<br/>")
        End If
        Label1.Text = sb.ToString()

    End Sub

<html xmlns="" >
<head runat="server">
    <title>HttpCookie Example</title>
    <form id="form1" runat="server">
      <asp:Label id="Label1" runat="server"></asp:Label>    

  • AspNetHostingPermission  for operating in a hosted environment. Demand value: LinkDemand; Permission value: Minimal.


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 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0