ASP.NET Tutorial/Cookie/HttpCookie
HttpCookie
<source lang="csharp">
<%@ 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">
<asp:Label ID="myLabel" runat="server" />
</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;
}
}
}</source>
HttpCookie (VB)
<source lang="csharp">
<%@ 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">
<asp:Label ID="myLabel" runat="server" />
</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</source>
