'The name does not exist in the current context'

[MiziaQ]

I'm trying to authenticate the user login in c#. I get the following 2 errors: 'the name 'login_username' does not exist in the current context' and 'the name 'login_password' does not exist in the current context'.

index.aspx

<tr>
                        <td>&nbsp;</td>
                        <td>
                            <asp:TextBox ID="login_username" runat="server" Width="160px"></asp:TextBox>
                        </td>
                        <td>
                            <asp:TextBox ID="login_password" TextMode="password" runat="server" Width="160px"></asp:TextBox>
                        </td>
                        <td>
                            <asp:Button id="btnLogin" class ="btn" Text="Login" onClick="btnLogin_Authenticate" runat="server" Width="50px" />
                        </td>
                    </tr>
 

index.aspx.cs

protected void btnLogin_Authenticate(object sender, AuthenticateEventArgs e)
    {
 
        try
        {
 
            string username; //Get the email from the control
            string password; //Get the password from the control
 
            username = login_username.Text;
            password = login_password.Text;
 
            bool flag = AuthenticateUser(username, password);
 
            if (flag == true)
            {
 
                e.Authenticated = true;
                string randomString = Guid.NewGuid().ToString();
 
                string url = "companyadmin.aspx?";
                url += randomString;
                Response.Redirect(url);
 
            }
            else
 
                e.Authenticated = false;
                Response.Redirect("~/loginattempt.aspx?retry");
        }
        catch (Exception)
        {
            e.Authenticated = false;
 
        }
    }
 
 

Thanks in advance for the help!

[Plater]

Do both of your files have matching names at the top of their contents?
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="index.aspx.cs" Inherits="index" %>

and

public partial class index: System.Web.UI.Page

[MiziaQ]

That got rid of the two errors - thanks! However, I now get a new error message.

'No overload for 'btnLogin_Authenticate' matches delegate 'System.EventHandler'. Any ideas?

I appreciate it!

[Plater]

Well I was wondering about that, I've never seen a button handler look like this:
protected void btnLogin_Authenticate(object sender, AuthenticateEventArgs e)


I would think you would need to use:
protected void btnLogin_Authenticate(object sender, EventArgs e)

That should match the expected handler for the button. I have no idea if e comes in as an instance of AuthenticateEventArgs, for me it is always a blank instance of EventArgs