Allow Enter key to login in asp.net?

Question

I have a standard asp:login control:

Answer 1

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;
    }

Answer 2

Button lbButton = Login1.FindControl("LoginButton") as Button;

ContentPlaceHolder contentPlaceHolder = (ContentPlaceHolder)Master.FindControl("ContentPlaceHolder1");
contentPlaceHolder.Page.Form.DefaultButton = lbButton.UniqueID;

Answer 3

I know this is a super old post, but another way to do this is by using an asp:Panel with DefaultButton set to the ID of the button that the user would normally click on to log in:

<asp:Login ID="LoginUser" runat="server">
  <LayoutTemplate>
    <asp:Panel ID="LoginPanel" runat="server" DefaultButton="LoginButton">
      <other stuff here like username and password textboxes>
      <asp:Button ID="LoginButton" runat="server" CommandName="Login" Text="Log In"/>
  </asp:Panel>
</LayoutTemplate>

Answer 4

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.