Gets or sets the authentication sliding expiration.
(in System.Web.dll)
Visual Basic (Declaration)
<ConfigurationPropertyAttribute("slidingExpiration", DefaultValue := True)> _
Public Property SlidingExpiration As Boolean
Dim instance As FormsAuthenticationConfiguration
Dim value As Boolean
value = instance.SlidingExpiration
instance.SlidingExpiration = value
[ConfigurationPropertyAttribute("slidingExpiration", DefaultValue = true)]
public bool SlidingExpiration { get; set; }
[ConfigurationPropertyAttribute(L"slidingExpiration", DefaultValue = true)]
public:
property bool SlidingExpiration {
bool get ();
void set (bool value);
}
public function get SlidingExpiration () : boolean
public function set SlidingExpiration (value : boolean)
Property Value
Type:
System..::.Boolean
true if the sliding expiration is enabled; otherwise, false. The default is true.
When the SlidingExpiration is set to true, the time interval during which the authentication cookie is valid is reset to the expiration Timeout property value. This happens if the user browses after half of the timeout has expired. For example, if you set an expiration of 20 minutes by using sliding expiration, a user can visit the site at 2:00 PM and receive a cookie that is set to expire at 2:20 PM. The expiration is only updated if the user visits the site after 2:10 PM. If the user visits the site at 2:09 PM, the cookie is not updated because half of the expiration time has not passed. If the user then waits 12 minutes, visiting the site at 2:21 PM, the cookie will be expired.
The following code example shows how to access the SlidingExpiration property. Refer to the code example in the FormsAuthenticationConfiguration class topic to learn how to get the section.
' Get the current SlidingExpiration.
Dim currentSlidingExpiration As Boolean = _
formsAuthentication.SlidingExpiration
' Set the SlidingExpiration.
formsAuthentication.SlidingExpiration = False
// Get the current SlidingExpiration.
bool currentSlidingExpiration =
formsAuthentication.SlidingExpiration;
// Set the SlidingExpiration.
formsAuthentication.SlidingExpiration = false;
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
.NET Framework
Supported in: 3.5, 3.0, 2.0
Reference
Other Resources