Login.OnLoginError Method
Assembly: System.Web (in system.web.dll)
The OnLoginError method raises the LoginError event. Use the LoginError event to provide additional processing, such as error logging, when a user's login attempt fails.
Raising an event invokes the event handler through a delegate. For more information, see Raising an Event.
The OnLoginError method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.
Notes to Inheritors When overriding OnLoginError in a derived class, be sure to call the base class's OnLoginError method so that registered delegates receive the event.The following code example uses the LoginError event to display Help links to the user when a login attempt fails.
<%@ page language="VB" %> <script runat="server"> ' This custom Login control displays help ' informatin if the user does not log in ' on the first attempt. Class CustomLogin Inherits Login Protected Overrides Sub OnLoginError(ByVal e As EventArgs) HelpPageText = "Help with logging in..." CreateUserText = "Create a new user..." PasswordRecoveryText = "Forgot your password?" End Sub Sub New() CreateUserUrl = "createUser.aspx" HelpPageUrl = "loginHelp.aspx" PasswordRecoveryUrl = "getPass.aspx" End Sub End Class ' Add the custom login control to the page. Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Dim loginControl As New CustomLogin loginControl.ID = "loginControl" PlaceHolder1.Controls.Add(loginControl) End Sub </script> <html> <body> <form id="Form1" runat="server"> <asp:placeholder id="Placeholder1" runat="Server"></asp:placeholder> </form> </body> </html>
Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.