Using the Login server control on the Login.aspx page (VB) : Login « Authentication Authorization « ASP.NET Tutorial

<%@ Page Language="VB" %>

<script runat="server">
    Protected Sub Login1_Authenticate(ByVal sender As Object, _
      ByVal e As System.Web.UI.WebControls.AuthenticateEventArgs)

        If (Login1.UserName = "A" And Login1.Password = "B") Then
            FormsAuthentication.RedirectFromLoginPage(Login1.UserName, _
               Login1.RememberMeSet)
        Else
            Response.Write("Invalid credentials")
        End If
    End Sub
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>Login Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Login ID="Login1" runat="server" OnAuthenticate="Login1_Authenticate">
        </asp:Login>
    </div>
    </form>
</body>
</html>

21.3.Login
	21.3.1.	Using a Template with the Login Control
	21.3.2.	Performing Custom Authentication with the Login Control
	21.3.3.	Automatically Redirecting a User to the Referring Page
	21.3.4.	Using the Login server control on the Login.aspx page (C#)
	21.3.5.	Using the Login server control on the Login.aspx page (VB)