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AuthenticationServiceManager Class

Configures the location of a custom implementation of the authentication service.

Namespace:  System.Web.UI
Assembly:  System.Web.Extensions (in System.Web.Extensions.dll)

<AspNetHostingPermissionAttribute(SecurityAction.InheritanceDemand, Level := AspNetHostingPermissionLevel.Minimal)> _
<AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level := AspNetHostingPermissionLevel.Minimal)> _
Public Class AuthenticationServiceManager
Dim instance As AuthenticationServiceManager

The AuthenticationServiceManager class corresponds to the AuthenticationService property of the ScriptManager or ScriptManagerProxy control.

The authentication Web service is used by AJAX-enabled applications to log on and log off from client script. You can use AuthenticationServiceManager to provide the path of an alternative implementation of the authentication Web service instead of using the built-in Web service that is provided by the AJAX features of ASP.NET.

To use the authentication service in your application, you must enable it in the configuration file. If you use the built-in authentication Web service, you do not have to explicitly declare the authentication service manager on the page.

To create your own authentication service, you must implement a Web service that has two methods: Login and Logout. In addition, these methods require the same signature of the built-in authentication Web service.

The following example shows the basic class structure that must be implemented in a custom authentication Web service class.

<%@ WebService Language="VB" Class="MyAuthenticationService" %>

Imports System.Web.Services
Imports System.Web.Script.Services

<ScriptService()> _
Public Class MyAuthenticationService
    Inherits System.Web.Services.WebService

    <WebMethod()> _
    Public Function Login(ByVal userName As String, _
        ByVal password As String, _
        ByVal createPersistentCookie As Boolean) As Boolean 

        'Place code here. 
        Return True 

    End Function

    <WebMethod()> _
    Public Sub Logout()

        'Place code here. 

    End Sub 

End Class

To use a custom authentication Web service, you can add the service declaratively in markup by including an <AuthenticationService> element inside the <asp:ScriptManager> element on the page, as shown in the following example.

<asp:ScriptManager ID="SM1" runat="server">
  <AuthenticationService Path="MyAuthenticationService.asmx" />

You can also programmatically configure Path to use a custom authentication Web service.

Regardless of whether the declarative section for the authentication service is on the page, if the authentication service is enabled in the configuration file, then AJAX-enabled applications will include an ECMAScript (JavaScript) variable in the rendered page. This allows client script to determine whether the current user is authenticated.


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

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