AuthenticationService.Authenticating Event
Definition
Important
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Occurs when user credentials are being validated.
public:
static event EventHandler<System::Web::ApplicationServices::AuthenticatingEventArgs ^> ^ Authenticating;
public static event EventHandler<System.Web.ApplicationServices.AuthenticatingEventArgs> Authenticating;
member this.Authenticating : EventHandler<System.Web.ApplicationServices.AuthenticatingEventArgs>
Public Shared Custom Event Authenticating As EventHandler(Of AuthenticatingEventArgs)
Event Type
Examples
The following example shows how to bind an event handler for the Authenticating event in the Application_Start
method of the Global.asax file.
void Application_Start(object sender, EventArgs e)
{
System.Web.ApplicationServices.AuthenticationService.Authenticating +=
new EventHandler<System.Web.ApplicationServices.AuthenticatingEventArgs>(AuthenticationService_Authenticating);
}
Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs)
AddHandler System.Web.ApplicationServices.AuthenticationService.Authenticating, _
AddressOf Me.AuthenticationService_Authenticating
End Sub
The following example shows an event handler for the Authenticating event in the Global.asax file. The event handler reads two authentication values from the CustomCredential property and passes them together with the user name and password to a custom authentication class named StudentAuthentication
.
void AuthenticationService_Authenticating(object sender, System.Web.ApplicationServices.AuthenticatingEventArgs e)
{
string studentid = String.Empty;
string answer = String.Empty;
string[] credentials =
e.CustomCredential.Split(new char[] { ',' });
if (credentials.Length > 0)
{
studentid = credentials[0];
if (credentials.Length > 1)
{
answer = credentials[1];
}
}
try
{
e.Authenticated =
StudentAuthentication.ValidateStudentCredentials
(e.UserName, e.Password, studentid, answer);
}
catch (ArgumentNullException ex)
{
e.Authenticated = false;
}
e.AuthenticationIsComplete = true;
}
Sub AuthenticationService_Authenticating _
(ByVal sender As Object, _
ByVal e As System.Web.ApplicationServices.AuthenticatingEventArgs)
Dim studentid As String = String.Empty
Dim answer As String = String.Empty
Dim credentials As String() = _
e.CustomCredential.Split(New Char() {","c})
If (credentials.Length > 0) Then
studentid = credentials(0)
If (credentials.Length > 1) Then
answer = credentials(1)
End If
End If
Try
e.Authenticated = _
StudentAuthentication.ValidateStudentCredentials _
(e.Username, e.Password, studentid, answer)
Catch ex As ArgumentNullException
e.Authenticated = False
End Try
e.AuthenticationIsComplete = True
End Sub
Remarks
The Authenticating event is raised when user credentials are being validated. Create an event handler for the Authenticating event to customize how user credentials are validated.
Applies to
See also
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