Текущая версия на 14:53, 26 мая 2010

Содержание

1 Adding cache dependencies (VB.net)
2 Create and retrieve Cookie data (C#)
3 Delete All Cookies (C#)
4 Delete All Cookies

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 = "Unknown Customer";
     }
     else
     {
       lblWelcome.Text = "Cookie Found.

";
       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 = "Cookie Created.";
     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">

Delete All Cookies

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

   </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">

   <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" />

   </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">

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

   </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>

<% 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 & "
") Expires = Cookie.Expires Response.Write("Expires: " & Expires & "
") SubKeys = Cookie.Values.AllKeys For Counter2 = 0 To SubKeys.GetUpperBound(0) Response.Write("Key " & CStr(Counter2) + ": " & SubKeys(Counter2) & "
") Response.Write("Value " & CStr(Counter2) + ": " & Cookie.Values(Counter2) & "
") Next Counter2 Next Counter1 %>

</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>

<% 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") %>

</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 & "
"
   Next

End Sub </SCRIPT> <HTML> <HEAD> <TITLE>Cookies Sample Page</TITLE> </HEAD> <BODY > <form runat="server"> <asp:Label

   id="lblMessage1"
   runat="Server"
   Font-Bold="True"

/>

<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"

/> </Form> </BODY> </HTML>

      </source>

ASP.Net/Session Cookie/Cookie — различия между версиями

Текущая версия на 14:53, 26 мая 2010

Содержание

Adding cache dependencies (VB.net)

Create and retrieve Cookie data (C#)

Delete All Cookies (C#)

Delete All Cookies

Delete Cookie (C#)

Display all Cookie (C#)

Getting cookie values in ASP.NET

Save and retrieve values in Cookie (C#)

Save Cookie (Vb.net)

Set cookie expire date (VB.net)

Setting a Cookie (VB.net)

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

Write Cookie and read Cookie (VB.net)

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Текущая версия на 14:53, 26 мая 2010 (просмотреть исходный код) Admin (обсуждение \| вклад) м (1 версия)	Текущая версия на 14:53, 26 мая 2010 (просмотреть исходный код) Admin (обсуждение \| вклад) м (1 версия)
(нет различий)