ASP.NET Tutorial/Cookie/HttpCookie
HttpCookie
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="myLabel" runat="server" />
</div>
</form>
</body>
</html>
File: Default.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
HttpCookie userCookie;
userCookie = Request.Cookies["UserID"];
if (userCookie == null)
{
myLabel.Text = "Creating a cookie now.";
userCookie = new HttpCookie("UserID", "JoeBlack");
userCookie.Expires = DateTime.Now.AddMonths(1);
Response.Cookies.Add(userCookie);
}
else
{
myLabel.Text = "Welcome back, " + userCookie.Value;
}
}
}
HttpCookie (VB)
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="myLabel" runat="server" />
</div>
</form>
</body>
</html>
File: Default.aspx.vb
Partial Class _Default
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, _
ByVal e As System.EventArgs) Handles Me.Load
Dim userCookie As HttpCookie
userCookie = Request.Cookies("UserID")
If userCookie Is Nothing Then
myLabel.Text = "Cookie doesn"t exist! Creating a cookie now."
userCookie = New HttpCookie("UserID", "JoeBlack")
userCookie.Expires = DateTime.Now.AddMonths(1)
Response.Cookies.Add(userCookie)
Else
myLabel.Text = "Welcome back, " & userCookie.Value
End If
End Sub
End Class