Cookies no Delphi 2005/2006 (aplicações ASP.NET)
Veja como criar, apagar e limitar o tempo dos cookies no Delphi 2005/2006 (aplicações ASP.NET).
Nada melhor que um exemplo prático para aprendermos, por isso segue abaixo os fontes de como criar, apagar e limitar o tempo dos cookies no Delphi 2005/2006.
unit WebForm1;
interface
uses
System.Collections, System.ComponentModel,
System.Data, System.Drawing, System.Web, System.Web.SessionState,
System.Web.UI, System.Web.UI.WebControls, System.Web.UI.HtmlControls;
type
TWebForm1 = class(System.Web.UI.Page)
{$REGION 'Designer Managed Code'}
strict private
procedure InitializeComponent;
procedure Button1_Click(sender: System.Object; e: System.EventArgs);
procedure Button2_Click(sender: System.Object; e: System.EventArgs);
{$ENDREGION}
strict private
procedure Page_Load(sender: System.Object; e: System.EventArgs);
strict protected
TextBox1: System.Web.UI.WebControls.TextBox;
Button1: System.Web.UI.WebControls.Button;
Label1: System.Web.UI.WebControls.Label;
Button2: System.Web.UI.WebControls.Button;
procedure OnInit(e: EventArgs); override;
private
{ Private Declarations }
public
{ Public Declarations }
end;
implementation
{$REGION 'Designer Managed Code'}
///
/// Required method for Designer support -- do not modify
/// the contents of this method with the code editor.
///
procedure TWebForm1.InitializeComponent;
begin
Include(Self.Button1.Click, Self.Button1_Click);
Include(Self.Button2.Click, Self.Button2_Click);
Include(Self.Load, Self.Page_Load);
end;
{$ENDREGION}
procedure TWebForm1.Page_Load(sender: System.Object; e: System.EventArgs);
begin
if Request.Cookies['Usuario'] <> nil then
Label1.Text := System.String.Format('Seja bem-vindo {0}',
Request.Cookies['Usuario'].Value);
end;
procedure TWebForm1.OnInit(e: EventArgs);
begin
//
// Required for Designer support
//
InitializeComponent;
inherited OnInit(e);
end;
procedure TWebForm1.Button2_Click(sender: System.Object; e: System.EventArgs);
begin
// apaga o cookie. Literalmente apaga o arquivo cookie
Response.Cookies['Usuario'].Expires;
end;
procedure TWebForm1.Button1_Click(sender: System.Object; e: System.EventArgs);
var
ck: System.Web.HttpCookie;
begin
// Cria Cookie, expira em 3 dias
ck := System.Web.HttpCookie.Create('Usuario',TextBox1.Text);
ck.Expires := System.DateTime.Today.AddDays(3);
Response.Cookies.Add(ck);
end;
end.
