Cookie (печенье) — это промежуточная временная текстовая информация, которая хранится в браузере пользователя.
Размер cookies не должен превышать более 4кб.
Размер cookies не должен превышать более 4кб.
одноразовая кука
Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta charset="utf-8" /> <title></title> </head> <body> <form id="form1" runat="server"> <div> <asp:Label ID="Label1" runat="server" Text="Name : "></asp:Label> <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> <asp:Button ID="Button1" runat="server" Text="OK" OnClick="Button1_Click" Width="54px" /> <br /> <br /> <a target="_blank" href="a.aspx">go to a page of a</a> </div> </form> </body> </html>
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta charset="utf-8" /> <title></title> </head> <body> <form id="form1" runat="server"> <div> <asp:Label ID="Label1" runat="server" Text="Name : "></asp:Label> <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> <asp:Button ID="Button1" runat="server" Text="OK" OnClick="Button1_Click" Width="54px" /> <br /> <br /> <a target="_blank" href="a.aspx">go to a page of a</a> </div> </form> </body> </html>
Default.aspx.cs
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void Button1_Click(object sender, EventArgs e) { //создаем объект HttpCookie cookie1 = new HttpCookie("cookie1", TextBox1.Text); //записываем в коллекцию Response.Cookies.Add(cookie1); } }
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void Button1_Click(object sender, EventArgs e) { //создаем объект HttpCookie cookie1 = new HttpCookie("cookie1", TextBox1.Text); //записываем в коллекцию Response.Cookies.Add(cookie1); } }
a.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="a.aspx.cs" Inherits="a" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta charset="utf-8" /> <title></title> </head> <body> <form id="form1" runat="server"> <div> <asp:Label ID="Label1" runat="server" Text=""></asp:Label> </div> </form> </body> </html>
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="a.aspx.cs" Inherits="a" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta charset="utf-8" /> <title></title> </head> <body> <form id="form1" runat="server"> <div> <asp:Label ID="Label1" runat="server" Text=""></asp:Label> </div> </form> </body> </html>
a.aspx.cs
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class a : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { /*вариант без проверки*/ //Label1.Text = "Hello " + Request.Cookies["cookie1"].Value + " !"; /*вариант с проверкой*/ HttpCookie cookie1 = Request.Cookies["cookie1"]; if(cookie1 != null) { Label1.Text = "Hello " + cookie1.Value + " !"; } else { Label1.Text = string.Empty; } } }
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class a : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { /*вариант без проверки*/ //Label1.Text = "Hello " + Request.Cookies["cookie1"].Value + " !"; /*вариант с проверкой*/ HttpCookie cookie1 = Request.Cookies["cookie1"]; if(cookie1 != null) { Label1.Text = "Hello " + cookie1.Value + " !"; } else { Label1.Text = string.Empty; } } }
кука с установленным временем
Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta charset="utf-8" /> <title></title> </head> <body> <form id="form1" runat="server"> <div> <asp:Label ID="Label1" runat="server" Text="Name : "></asp:Label> <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> <asp:Button ID="Button1" runat="server" Text="OK" OnClick="Button1_Click" Width="54px" /> <br /> <br /> <a target="_blank" href="a.aspx">go to a page of a</a> </div> </form> </body> </html>
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta charset="utf-8" /> <title></title> </head> <body> <form id="form1" runat="server"> <div> <asp:Label ID="Label1" runat="server" Text="Name : "></asp:Label> <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> <asp:Button ID="Button1" runat="server" Text="OK" OnClick="Button1_Click" Width="54px" /> <br /> <br /> <a target="_blank" href="a.aspx">go to a page of a</a> </div> </form> </body> </html>
Default.aspx.cs
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void Button1_Click(object sender, EventArgs e) { //создаем объект HttpCookie cookie1 = new HttpCookie("cookie1", TextBox1.Text); //время жизни куки, к нынешней дате добавляем год cookie1.Expires = DateTime.Now.AddDays(365); //записываем в коллекцию Response.Cookies.Add(cookie1); } }
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void Button1_Click(object sender, EventArgs e) { //создаем объект HttpCookie cookie1 = new HttpCookie("cookie1", TextBox1.Text); //время жизни куки, к нынешней дате добавляем год cookie1.Expires = DateTime.Now.AddDays(365); //записываем в коллекцию Response.Cookies.Add(cookie1); } }
a.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="a.aspx.cs" Inherits="a" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta charset="utf-8" /> <title></title> </head> <body> <form id="form1" runat="server"> <div> <asp:Label ID="Label1" runat="server" Text=""></asp:Label> </div> </form> </body> </html>
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="a.aspx.cs" Inherits="a" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta charset="utf-8" /> <title></title> </head> <body> <form id="form1" runat="server"> <div> <asp:Label ID="Label1" runat="server" Text=""></asp:Label> </div> </form> </body> </html>
a.aspx.cs
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class a : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { /*вариант без проверки*/ //Label1.Text = "Hello " + Request.Cookies["cookie1"].Value + " !"; /*вариант с проверкой*/ HttpCookie cookie1 = Request.Cookies["cookie1"]; if(cookie1 != null) { Label1.Text = "Hello " + cookie1.Value + " !"; } else { Label1.Text = string.Empty; } } }
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class a : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { /*вариант без проверки*/ //Label1.Text = "Hello " + Request.Cookies["cookie1"].Value + " !"; /*вариант с проверкой*/ HttpCookie cookie1 = Request.Cookies["cookie1"]; if(cookie1 != null) { Label1.Text = "Hello " + cookie1.Value + " !"; } else { Label1.Text = string.Empty; } } }
удаление куки программно
Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta charset="utf-8" /> <title></title> </head> <body> <form id="form1" runat="server"> <div> <asp:Label ID="Label1" runat="server" Text="Name : "></asp:Label> <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> <asp:Button ID="Button1" runat="server" Text="OK" OnClick="Button1_Click" Width="54px" /> <asp:Button ID="Button2" runat="server" Text="Delete" OnClick="Button2_Click" /> <br /> <br /> <a target="_blank" href="a.aspx">go to a page of a</a> </div> </form> </body> </html>
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta charset="utf-8" /> <title></title> </head> <body> <form id="form1" runat="server"> <div> <asp:Label ID="Label1" runat="server" Text="Name : "></asp:Label> <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> <asp:Button ID="Button1" runat="server" Text="OK" OnClick="Button1_Click" Width="54px" /> <asp:Button ID="Button2" runat="server" Text="Delete" OnClick="Button2_Click" /> <br /> <br /> <a target="_blank" href="a.aspx">go to a page of a</a> </div> </form> </body> </html>
Default.aspx.cs
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } //OK protected void Button1_Click(object sender, EventArgs e) { //создаем объект HttpCookie cookie1 = new HttpCookie("cookie1", TextBox1.Text); //время жизни куки, к нынешней дате добавляем год cookie1.Expires = DateTime.Now.AddDays(365); //записываем в коллекцию Response.Cookies.Add(cookie1); } //Delete protected void Button2_Click(object sender, EventArgs e) { //создаем объект HttpCookie cookie1 = new HttpCookie("cookie1"); //создаем прошедшую дату cookie1.Expires = DateTime.Now.AddDays(-1); //записываем в коллекцию Response.Cookies.Add(cookie1); //в ответе браузеру, заставляем его сделать запрос на эту страницу Response.Redirect(Request.Url.PathAndQuery); } }
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } //OK protected void Button1_Click(object sender, EventArgs e) { //создаем объект HttpCookie cookie1 = new HttpCookie("cookie1", TextBox1.Text); //время жизни куки, к нынешней дате добавляем год cookie1.Expires = DateTime.Now.AddDays(365); //записываем в коллекцию Response.Cookies.Add(cookie1); } //Delete protected void Button2_Click(object sender, EventArgs e) { //создаем объект HttpCookie cookie1 = new HttpCookie("cookie1"); //создаем прошедшую дату cookie1.Expires = DateTime.Now.AddDays(-1); //записываем в коллекцию Response.Cookies.Add(cookie1); //в ответе браузеру, заставляем его сделать запрос на эту страницу Response.Redirect(Request.Url.PathAndQuery); } }
a.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="a.aspx.cs" Inherits="a" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta charset="utf-8" /> <title></title> </head> <body> <form id="form1" runat="server"> <div> <asp:Label ID="Label1" runat="server" Text=""></asp:Label> </div> </form> </body> </html>
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="a.aspx.cs" Inherits="a" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta charset="utf-8" /> <title></title> </head> <body> <form id="form1" runat="server"> <div> <asp:Label ID="Label1" runat="server" Text=""></asp:Label> </div> </form> </body> </html>
a.aspx.cs
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class a : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { /*вариант без проверки*/ //Label1.Text = "Hello " + Request.Cookies["cookie1"].Value + " !"; /*вариант с проверкой*/ HttpCookie cookie1 = Request.Cookies["cookie1"]; if(cookie1 != null) { Label1.Text = "Hello " + cookie1.Value + " !"; } else { Label1.Text = string.Empty; } } }
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class a : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { /*вариант без проверки*/ //Label1.Text = "Hello " + Request.Cookies["cookie1"].Value + " !"; /*вариант с проверкой*/ HttpCookie cookie1 = Request.Cookies["cookie1"]; if(cookie1 != null) { Label1.Text = "Hello " + cookie1.Value + " !"; } else { Label1.Text = string.Empty; } } }