Gets a value that indicates whether the application is configured for cookieless forms authentication.
Assembly: System.Web (in System.Web.dll)
The property reflects the value for the cookieless attribute of the forms configuration element. The property determines whether the FormsAuthenticationTicket value will be stored in a session cookie in the browser or stored in the QueryString property.
When the FormsAuthenticationTicket value is stored in the URI, the length of the generated URI may be longer than the maximum length allowed. This is most likely to occur when the FormsCookiePath property is set to the application name and the application name is long (40 or more characters), when user names in the application are long, or when long UserData strings are stored in the FormsAuthenticationTicket value. If the generated URI is too long, the Web server will return a 400 - Bad Request error.
The following code example sets the cookieless attribute to AutoDetect in the Web.config file.
<authentication mode="Forms"> <forms loginUrl="member_login.aspx" cookieless="AutoDetect" /> </authentication>
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.