<%@ Control %>
<script language="c#" runat="server">

    private Boolean m_Secure = false;
    public String WelcomeMessage = "Welcome";
    
    void Login_Click(Object sender, EventArgs e){
        if (UsernameValidator.IsValid && PasswordValidator.IsValid){
            UnsecurePanel.Visible = false;
            Message.Text = WelcomeMessage + ", " + UserName.Text;
            SecurePanel.Visible = true;
            m_Secure = true;
        }
    }
    void Logout_Click(Object sender, EventArgs e){
        if (UsernameValidator.IsValid && PasswordValidator.IsValid){
            Logoff();
        }
    }    
    
    public Boolean Secure{
        get{
            return m_Secure;
        }
        
    }
    
    public String User{
        get{
            return UserName.Text;
        }
    }    
    
    public void Logoff(){
        UnsecurePanel.Visible = true;
        UserName.Text = "";
        Password.Text = "";
        SecurePanel.Visible = false;
        m_Secure = false;        
    }
    
</script>
<asp:panel id="UnsecurePanel" runat="Server">
    <asp:label runat="server" font-size="9pt">Username: </asp:label><br><asp:textbox id="UserName" runat="server" /><br>
    <asp:requiredfieldvalidator id="UsernameValidator" runat="server"  controltovalidate="UserName" errormessage="Please enter a username" style="color: red; font-size: 8pt"  /><br>
    <asp:label runat="server" font-size="9pt">Password: </asp:label><br><asp:textbox id="Password" runat="server" textmode="Password" /><br>
    <asp:requiredfieldvalidator id="PasswordValidator" runat="server"  controltovalidate="Password" errormessage="Please enter a password" style="color: red; font-size: 8pt" /><br>
    <asp:button id="Login" text="Login" runat="server" onclick="Login_Click"/>
</asp:panel>
<asp:panel id="SecurePanel" runat="Server" visible="false"> 
    <asp:label id="Message" runat="server"/><br>
    <asp:linkbutton id="Logout" runat="server" onclick="Logout_Click" text="Logout" style="font-size: 8pt; color: blue;"/>
</asp:panel>