My About.aspx is now as follows:

<%@ Page Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage" %>


<asp:Content ID="aboutTitle" ContentPlaceHolderID="TitleContent" runat="server">
    About Us
</asp:Content>


<asp:Content ID="aboutContent" ContentPlaceHolderID="MainContent" runat="server">


    <script type="text/javascript">


        $(document).ready(function () {
               $(document).keypress(function (e) {
                   //alert("You pressed: " + e.keyCode);
                   if ((e.which == 13) || (e.keyCode == 13)) {
                       alert("You pressed enter");
                       //comment/modify following line as per needs
                       $('button[type=submit] .NavButton').click();
                   }
               });
           });


    </script>


    <h2>About</h2>
    <p>
        Put content here.
    </p>


    <p>
        <% Html.BeginForm("About", "Home", FormMethod.Post); %>
        <%=Html.TextBox("txtBox","hello there") %>
        <input class="NotNavButton" type="submit" name="submitButton" value="Previous" />
        <input class="NavButton" type="submit" name="submitButton" value="Next" />
        <% Html.EndForm(); %>
    </p>


</asp:Content>

Scenario1:

When I run the app, go to the About page, the press the enter key, I see the "You pressed enter" alert. When I click the OK button on the alert, the alert goes away but nothing else happens.

Scenario2:

If I click inside the TextBox, then press Enter, I see the "You pressed enter" alert.  When I click "OK" on the alert, the alert goes away and my controller action is called.  There is not a key for "submitButton" in my FormCollection though.  Only key available is "txtBox".

I would like the behavior of Scenario1, but need it to call the controller action and pass the Key for "submitButton" in the FormCollection.

Your help and instruction has been great!