确定使用哪个提交按钮在asp.net MVC中发布表单

这是我的查看代码。。。。

<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<Data.TempPerson>" %>
<div class="phonePerson">
    <% using (Ajax.BeginForm("Create", new AjaxOptions
       {
           UpdateTargetId = "divList",
           HttpMethod = "Post",
           OnSuccess = "RedoLayout"
       }))
       { %>
    <label for="Name">
        Name:</label>
    <%= Html.TextBox("Name")%>
    <input type="submit" name="Button" id="Save" value="Save" class="btnSave" />
    <div id="phoneList" class="phoneList">
        <table>
            <% foreach (var item in Model.Phones)
               { %>
                 ... Stuff omitted for space ....
            <% } %>
            <tr>
                <td colspan="2">
                    <input type="submit" id="Add" name="Button" value="Add another phone" class="btn_AddPhone" />
                </td>
            </tr>
        </table>
        <% } %>
    </div>
</div>