HttpCookie Class
Important
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Provides a type-safe way to create and manipulate individual HTTP cookies.
public ref class HttpCookie sealed
public sealed class HttpCookie
type HttpCookie = class
Public NotInheritable Class HttpCookie
- Inheritance
-
HttpCookie
The following code example demonstrates how to check for a cookie named DateCookieExample
in the HttpRequest object. If the cookie is not found, it is created and added to the HttpResponse object. The cookie is set to expire in 10 minutes.
<%@ 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 Page_Load(object sender, EventArgs e)
{
StringBuilder sb = new StringBuilder();
// Get cookie from the current request.
HttpCookie cookie = Request.Cookies.Get("DateCookieExample");
// Check if cookie exists in the current request.
if (cookie == null)
{
sb.Append("Cookie was not received from the client. ");
sb.Append("Creating cookie to add to the response. <br/>");
// Create cookie.
cookie = new HttpCookie("DateCookieExample");
// Set value of cookie to current date time.
cookie.Value = DateTime.Now.ToString();
// Set cookie to expire in 10 minutes.
cookie.Expires = DateTime.Now.AddMinutes(10d);
// Insert the cookie in the current HttpResponse.
Response.Cookies.Add(cookie);
}
else
{
sb.Append("Cookie retrieved from client. <br/>");
sb.Append("Cookie Name: " + cookie.Name + "<br/>");
sb.Append("Cookie Value: " + cookie.Value + "<br/>");
sb.Append("Cookie Expiration Date: " +
cookie.Expires.ToString() + "<br/>");
}
Label1.Text = sb.ToString();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>HttpCookie Example</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label id="Label1" runat="server"></asp:Label>
</div>
</form>
</body>
</html>
<%@ Page Language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
Dim sb As New StringBuilder()
' Get cookie from current request.
Dim cookie As HttpCookie
cookie = Request.Cookies.Get("DateCookieExample")
' Check if cookie exists in the current request
If (cookie Is Nothing) Then
sb.Append("Cookie was not received from the client. ")
sb.Append("Creating cookie to add to the response. <br/>")
' Create cookie.
cookie = New HttpCookie("DateCookieExample")
' Set value of cookie to current date time.
cookie.Value = DateTime.Now.ToString()
' Set cookie to expire in 10 minutes.
cookie.Expires = DateTime.Now.AddMinutes(10D)
' Insert the cookie in the current HttpResponse.
Response.Cookies.Add(cookie)
Else
sb.Append("Cookie retrieved from client. <br/>")
sb.Append("Cookie Name: " + cookie.Name + "<br/>")
sb.Append("Cookie Value: " + cookie.Value + "<br/>")
sb.Append("Cookie Expiration Date: " & _
cookie.Expires.ToString() & "<br/>")
End If
Label1.Text = sb.ToString()
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>HttpCookie Example</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label id="Label1" runat="server"></asp:Label>
</div>
</form>
</body>
</html>
The HttpCookie class gets and sets properties of individual cookies. The HttpCookieCollection class provides methods to store, retrieve, and manage multiple cookies.
ASP.NET includes two intrinsic cookie collections. The collection accessed through the Cookies collection of the HttpRequest object contains cookies transmitted by the client to the server in the Cookie
header. The collection accessed through the Cookies collection of the HttpResponse object contains new cookies created on the server and transmitted to the client in the Set-Cookie
HTTP response header.
Http |
Creates, names, and assigns a value to a new cookie. |
Http |
Creates and names a new cookie. |
Domain |
Gets or sets the domain to associate the cookie with. |
Expires |
Gets or sets the expiration date and time for the cookie. |
Has |
Gets a value indicating whether a cookie has subkeys. |
Http |
Gets or sets a value that specifies whether a cookie is accessible by client-side script. |
Item[String] |
Gets a shortcut to the Values property. This property is provided for compatibility with previous versions of Active Server Pages (ASP). |
Name |
Gets or sets the name of a cookie. |
Path |
Gets or sets the virtual path to transmit with the current cookie. |
Same |
Gets or sets the value for the SameSite attribute of the cookie. |
Secure |
Gets or sets a value indicating whether to transmit the cookie using Secure Sockets Layer (SSL)--that is, over HTTPS only. |
Shareable |
Determines whether the cookie is allowed to participate in output caching. |
Value |
Gets or sets an individual cookie value. |
Values |
Gets a collection of key/value pairs that are contained within a single cookie object. |
Equals(Object) |
Determines whether the specified object is equal to the current object. (Inherited from Object) |
Get |
Serves as the default hash function. (Inherited from Object) |
Get |
Gets the Type of the current instance. (Inherited from Object) |
Memberwise |
Creates a shallow copy of the current Object. (Inherited from Object) |
To |
Returns a string that represents the current object. (Inherited from Object) |
Try |
Converts the specified string representation of a cookie into its HttpCookie equivalent and returns a value that indicates whether the conversion succeeded. |
Produk | Versi |
---|---|
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
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