в 15:30, 26 мая 2010

2010-05-26T15:30:47Z

Admin: 1 версия

2010-05-26T11:53:41Z

1 версия

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==Adding cache dependencies (VB.net)==



<source lang="csharp">
<%@ Page Language="vb" %>
<%@ OutputCache Duration="300" VaryByParam="None" %>
<html>
<head>
<title>Adding cache dependencies in ASP.NET</title>
<script runat="server">
Sub Page_Load()
Dim myArrayList As New ArrayList
myArrayList.Add("Key1")
myArrayList.Add("Key2")
Response.AddCacheItemDependencies(myArrayList)
Message.Text = DateTime.Now()
End Sub
Sub Button1_Click(sender As Object, e As EventArgs)
Cache("Key1") = "value for key1"
End Sub
Sub Button2_Click(sender As Object, e As EventArgs)
Cache("Key2") = "value for key2"
End Sub
</script>
</head>
<body>
<form runat="server">
<asp:label id="Message" runat="server"/>
<asp:button id="Button1" text="Change Key 1" onClick="Button1_Click" runat="server"/>
<asp:button id="Button2" text="Change Key 2" onClick="Button2_Click" runat="server"/>
</form>
</body>
</html>

</source>

==Create and retrieve Cookie data (C#)==



<source lang="csharp">
<%@ Page language="c#" src="CookieExample.aspx.cs" AutoEventWireup="false" Inherits="YourNamespace.CookieExample" %>
<HTML>
<body>
<form id="Form1" method="post" runat="server">
<asp:Label id="lblWelcome" style="Z-INDEX: 100; LEFT: 16px; POSITION: absolute; TOP: 24px"
runat="server" Width="412px" Height="130px" BackColor="LightYellow" Font-Size="Medium"
Font-Names="Verdana" BorderWidth="2px" BorderStyle="Groove"></asp:Label>
<asp:Button id="Button1" style="Z-INDEX: 105; LEFT: 288px; POSITION: absolute; TOP: 264px" runat="server"
Width="137px" Text="Submit Page"></asp:Button>
<asp:TextBox id="txtName" style="Z-INDEX: 101; LEFT: 96px; POSITION: absolute; TOP: 200px" runat="server"
Width="184px" Height="24px"></asp:TextBox>
<asp:Button id="cmdStore" style="Z-INDEX: 103; LEFT: 288px; POSITION: absolute; TOP: 200px"
runat="server" Width="137px" Text="Create Cookie"></asp:Button>
<asp:Label id="Label1" style="Z-INDEX: 104; LEFT: 24px; POSITION: absolute; TOP: 204px" runat="server"
Width="56px" Height="16px" Font-Size="X-Small" Font-Names="Verdana">Name:</asp:Label>
</form>
</body>
</HTML>
<%--
using System;
using System.Collections;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Net;
namespace YourNamespace
{
/// <summary>
/// Summary description for CookieExample.
/// </summary>
public class CookieExample : System.Web.UI.Page
{
protected System.Web.UI.WebControls.Label lblWelcome;
protected System.Web.UI.WebControls.TextBox txtName;
protected System.Web.UI.WebControls.Button cmdStore;
protected System.Web.UI.WebControls.Button Button1;
protected System.Web.UI.WebControls.Label Label1;

private void Page_Load(object sender, System.EventArgs e)
{
HttpCookie cookie = Request.Cookies["Preferences"];
if (cookie == null)
{
lblWelcome.Text = "<b>Unknown Customer</b>";
}
else
{
lblWelcome.Text = "<b>Cookie Found.</b><br><br>";
lblWelcome.Text += "Welcome, " + cookie["Name"];
}
}
#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: This call is required by the ASP.NET Web Form Designer.
//
InitializeComponent();
base.OnInit(e);
}

/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.cmdStore.Click += new System.EventHandler(this.cmdStore_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void cmdStore_Click(object sender, System.EventArgs e)
{
HttpCookie cookie = Request.Cookies["Preferences"];
if (cookie == null)
{
cookie = new HttpCookie("Preferences");
}
cookie["Name"] = txtName.Text;
cookie.Expires = DateTime.Now.AddYears(1);
Response.Cookies.Add(cookie);
lblWelcome.Text = "<b>Cookie Created.</b>";
lblWelcome.Text += "New Customer: " + cookie["Name"];
}
}
}
--%>

</source>

==Delete All Cookies (C#)==



<source lang="csharp">
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

void Page_Load()
{
string[] cookies = Request.Cookies.AllKeys;
foreach (string cookie in cookies)
{
BulletedList1.Items.Add("Deleting " + cookie);
Response.Cookies[cookie].Expires = DateTime.Now.AddDays(-1);
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Delete All Cookies</title>
</head>
<body>
<form id="form1" runat="server">
<div>

<h1>Delete All Cookies</h1>

<asp:BulletedList
id="BulletedList1"
EnableViewState="false"
Runat="server" />

</div>
</form>
</body>
</html>

</source>

==Delete Cookie (C#)==



<source lang="csharp">
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
protected void btnDelete_Click(object sender, EventArgs e)
{
Response.Cookies[txtCookieName.Text].Expires = DateTime.Now.AddDays(-1);
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Delete Cookie</title>
</head>
<body>
<form id="form1" runat="server">
<div>

<asp:Label
id="lblCookieName"
Text="Cookie Name:"
AssociatedControlID="txtCookieName"
Runat="server" />
<asp:TextBox
id="txtCookieName"
Runat="server" />
<asp:Button
id="btnDelete"
Text="Delete Cookie"
OnClick="btnDelete_Click"
Runat="server" />

</div>
</form>
</body>
</html>

</source>

==Display all Cookie (C#)==



<source lang="csharp">
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
void Page_Load()
{
ArrayList colCookies = new ArrayList();
for (int i = 0; i < Request.Cookies.Count; i++)
colCookies.Add(Request.Cookies[i]);
grdCookies.DataSource = colCookies;
grdCookies.DataBind();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Get All Cookies</title>
</head>
<body>
<form id="form1" runat="server">
<div>

<asp:GridView
id="grdCookies"
Runat="server"/>

</div>
</form>
</body>
</html>

</source>

==Getting cookie values in ASP.NET==



<source lang="csharp">
<%@ Page Language="vb" %>
<html>
<head>
<title>Getting cookie values in ASP.NET</title>
</head>
<body>
<p>
<%
Dim Counter1, Counter2 As Integer
Dim Keys(), SubKeys() As String
Dim CookieColl As HttpCookieCollection
Dim Cookie As HttpCookie
Dim Expires As DateTime
CookieColl = Request.Cookies
Keys = CookieColl.AllKeys
For Counter1 = 0 To Keys.GetUpperBound(0)
Cookie = CookieColl(Keys(Counter1))
Response.Write("Cookie: " & Cookie.Name & "<br>")
Expires = Cookie.Expires
Response.Write("Expires: " & Expires & "<br>")
SubKeys = Cookie.Values.AllKeys
For Counter2 = 0 To SubKeys.GetUpperBound(0)
Response.Write("Key " & CStr(Counter2) + ": " & SubKeys(Counter2) & "<br>")
Response.Write("Value " & CStr(Counter2) + ": " & Cookie.Values(Counter2) & "<br>")
Next Counter2
Next Counter1
%>
</p>
</body>
</html>

</source>

==Save and retrieve values in Cookie (C#)==



<source lang="csharp">
<%@ Page Language="c#" %>
<script Language="c#" runat="server">
void Page_Load(object source, EventArgs e)
{
if (!(IsPostBack))
{
MyButton.Text = "Save Cookie";
MyDropDownList.Items.Add("Blue");
MyDropDownList.Items.Add("Red");
MyDropDownList.Items.Add("Gray");
}
}
public void Click(object sender, EventArgs e)
{
HttpCookie MyCookie = new HttpCookie("Background");
MyCookie.Value = MyDropDownList.SelectedItem.Text;
Response.Cookies.Add(MyCookie);
}
</script>
<html>
<body>
<form id="CookieForm" method="post" runat="server">
<asp:DropDownList id=MyDropDownList runat="server"/>
<asp:button id=MyButton runat="server" OnClick="Click"/>
</form>
</body>
</html>

///////////////////////////////////////////////////

<%@ Page Language="c#" %>
<script Language="c#" runat="server">
void Page_Load(object source, EventArgs e)
{
Response.Cache.SetExpires(DateTime.Now);
}
string GetBackground()
{
return Request.Cookies["Background"].Value;
}
</script>
<html>
<body bgcolor="<% Response.Write(GetBackground()); %>">
<asp:label id="message" runat="server" />
</body>
</html>

</source>

==Save Cookie (Vb.net)==



<source lang="csharp">
<%@ Page Language="VB" %>
<script language="vb" runat="server">
Sub Page_Load(Source As Object, E as EventArgs)
If Not IsPostBack Then
MyButton.Text = "Save Cookie"
MyDropDownList.Items.Add("Blue")
MyDropDownList.Items.Add("Red")
MyDropDownList.Items.Add("Gray")
End If
End Sub
Public Sub Click(ByVal sender As Object, ByVal e As System.EventArgs)
Dim MyCookie As New HttpCookie("Background")
MyCookie.Value = MyDropDownList.SelectedItem.Text
Response.Cookies.Add(MyCookie)
End Sub
</script>
<html>
<body>
<form id="CookieForm" method="post" runat="server">
<asp:DropDownList id=MyDropDownList runat="server"/>
<asp:button id=MyButton runat="server" OnClick="Click"/>
</form>
</body>
</html>

//////////////////////////////////////////////////////////
// Get saved Cookies
<%@ Page Language="VB" %>
<script language="vb" runat="server">
Sub Page_Load(Source As Object, E as EventArgs)
Response.Cache.SetExpires(DateTime.Now)
End Sub
</script>
<html>
<body bgcolor="<%=Request.Cookies("Background").Value%>">
</body>
</html>

</source>

==Set cookie expire date (VB.net)==



<source lang="csharp">

<%@ Page Language="VB" %>
<script language="vb" runat="server">
Sub Page_Load(Source As Object, E as EventArgs)
If Not IsPostBack Then
MyButton.Text = "Save Cookie"
MyDropDownList.Items.Add("Blue")
MyDropDownList.Items.Add("Red")
MyDropDownList.Items.Add("Gray")
End If
End Sub
Public Sub Click(ByVal sender As Object, ByVal e As System.EventArgs)
Dim MyCookie As New HttpCookie("Background")
MyCookie.Value = MyDropDownList.SelectedItem.Text
Response.Cookies.Add(MyCookie)
End Sub
</script>
<html>
<body>
<form id="CookieForm" method="post" runat="server">
<asp:DropDownList id=MyDropDownList runat="server"/>
<asp:button id=MyButton runat="server" OnClick="Click"/>
</form>
</body>
</html>

//////////////////////////////////////////////////////////

<%@ Page Language="VB" %>
<script language="vb" runat="server">
Sub Page_Load(Source As Object, E as EventArgs)
Response.Cache.SetExpires(DateTime.Now)
End Sub
</script>
<html>
<body bgcolor="<%=Request.Cookies("Background").Value%>">
</body>
</html>

</source>

==Setting a Cookie (VB.net)==



<source lang="csharp">
<%@ Page Language="vb" %>
<html>
<head>
<title>Setting a Cookie in ASP.NET</title>
<script runat="server">
Sub Page_Load()
Dim myCookie As New HttpCookie("LoggedIn")
myCookie.Value = "True"
myCookie.Expires = DateTime.Now.AddMinutes(30)
Response.Cookies.Add(myCookie)
End Sub
</script>
</head>
<body>
<asp:label id="Message" runat="server"/>
</body>
</html>

</source>

==Setting expire date and path for cookies in ASP.NET (VHB.net)==



<source lang="csharp">
<%@ Page Language="vb" %>
<html>
<head>
<title>Setting cookies in ASP.NET</title>
</head>
<body>
<p>
<%
Dim Cookie1 As New HttpCookie("Cookie1")
Dim Cookie2 As New HttpCookie("Cookie2")
Dim ExpiryDate As DateTime = DateTime.Now()
ExpiryDate = ExpiryDate.AddHours(1)

Cookie1.Value = "Cookie from nfex.ru"
Cookie1.Expires = ExpiryDate
Cookie1.Path = "/"

Cookie2.Values("V1") = "1"
Cookie2.Values("V2") = "2"
Cookie2.Values("V3") = "3"
Cookie2.Expires = ExpiryDate
Cookie2.Path = "/"

Response.Cookies.Add(Cookie1)
Response.Cookies.Add(Cookie2)
Response.Write("Cookies written")
%>
</p>
</body>
</html>

</source>

==Write Cookie and read Cookie (VB.net)==



<source lang="csharp">
<%@ Page Language=VB Debug=true %>
<script runat=server>
Sub SubmitBtnWrite_Click(Sender As Object, E As EventArgs)
Response.Cookies("TestCookie1").Expires = "5/1/2010"
Response.Cookies("TestCookie1").Value = _
"The cookie stuff."
Response.Cookies("TestCookie2").Expires = "5/1/2010"
Response.Cookies("TestCookie2").Value = _
"More cookie stuff."
End Sub
Sub SubmitBtnRead_Click(Sender As Object, E As EventArgs)
Dim I as integer
For I = 0 to Request.Cookies.Count - 1
lblMessage1.Text = lblMessage1.Text _
& Request.Cookies.Item(I).Name & ": " _
& Request.Cookies.Item(I).Value & "<BR>"
Next
End Sub
</SCRIPT>
<HTML>
<HEAD>
<TITLE>Cookies Sample Page</TITLE>
</HEAD>
<BODY >
<form runat="server">
<Font Face="Tahoma">
<asp:Label
id="lblMessage1"
runat="Server"
Font-Bold="True"
/>
<BR><BR>
<asp:button
id="butOK1"
runat="server"
text="Write Cookies to Browser"
Type="Submit"
OnClick="SubmitBtnWrite_Click"
/>
<asp:button
id="butOK2"
runat="server"
text="Read Cookies from Browser"
Type="Submit"
OnClick="SubmitBtnRead_Click"
/>
</Font>
</Form>
</BODY>
</HTML>

</source>

← Предыдущая	Версия 15:30, 26 мая 2010
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ASP.Net/Session Cookie/Cookie - История изменений

в 15:30, 26 мая 2010

Admin: 1 версия