Allow Enter key to login in asp.net?

Question

I have a standard asp:login control:

<asp:Login ID="mbLogin" runat="server" TitleText=""
  DestinationPageUrl="~/Default.aspx"
  PasswordRecoveryText="Forgot your password?"
  PasswordRecoveryUrl="~/LostPassword.aspx"></asp:Login>

In Internet Explorer, pressing Enter does not submit the form, but IE beeps at me 10 times rapidly. In other browsers Enter works perfectly fine and submits the forum as you'd expect.

I've seen this question but that only works when you have actual form element with an actual button, not the login control as a whole.

Why is it being blocked in IE (and why 10 times for some reason)? Is there a workaround?

Answer 1

This is a hack, but it will provide a work around for your issue with Internet Explorer.
Add a text box to your page that is hidden from view.

<!-- Hack for Internet Explorer browsers to allow the page to post back when the enter key is pressed-->
<asp:TextBox ID="txtIEHackBox" runat="server" style="visibility: hidden; display: none;" />

This will cause Internet Explorer to send back the Button Web control's name/value pair upon hitting Enter.

Answer 2

Not tested, found in www

Assume we have a control on a page named "Login1"

In the Page_Load event handler:

---

Control ctl = Login1.FindControl("LoginButton"); if(ctl != null && ctl is IButtonControl)
Login1.Attributes.Add("onkeypress", string.Format("javascript:return WebForm_FireDefaultButton(event, '{0}')",ctl.ClientID));

---

I'm assuming that we also have the WebForm_FireDefaultButton client script file available on the page... (if not - you'll get a JavaScript error)

Answer 3

In the designer of your Login control: "Convert To Template". Then in the Page Load set the defaultButton of your form by finding the LoginButton.

ASPX:

<form id="form1" runat="server">
    <div>
        <asp:Login ID="Login1" runat="server" OnAuthenticate="Login1_Authenticate">
            <LayoutTemplate>
                <table border="0" cellpadding="1" cellspacing="0" style="border-collapse: collapse;">
                    <tr>
                        <td>
                            <table border="0" cellpadding="0">
                                .....
                                <tr>
                                    <td align="right" colspan="2">
                                        <asp:Button ID="LoginButton" runat="server" CommandName="Login" Text="Log In" ValidationGroup="Login1" />
                                    </td>
                                </tr>
                            </table>
                        </td>
                    </tr>
                </table>
            </LayoutTemplate>
        </asp:Login>
    </div>
    </form>

Code-Behind:

    protected void Page_Load(object sender, EventArgs e)
    {
        Button lbButton = Login1.FindControl("LoginButton") as Button;
        form1.DefaultButton = lbButton.UniqueID;
    }