通过Web表单asp.net中的列表访问和循环

Question

我在代码隐藏页面中有一个公共列表，它已成功绑定。我想访问它并在设计页面中显示数据，数据可以从列表中访问，但它没有显示页面上列表项的值。

private void GetAnnouncements()
        {
          var List = (from a in db.ANNOUNCEMENTS
                       orderby a.CREATEDON descending
                       select a).Take(3).ToList();
        }

设计页面如下

<% if (List.Count > 0)
                   {
                       foreach (var item in List)
                       {%>
                <div class="row">
                    <div class="col-md-12 faq-wrapper">
                        <div class="panel-group" id="accordion2">
                            <h3>ANNOUNCEMENTS</h3>
                            <div class="panel panel-default">
                                <div class="panel-heading">
                                    <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion2" href="#collapse11"> <% Convert.ToString(item.HEADING.ToString());%>
                                    </a>
                                </div>
                                <div id="collapse11" class="accordion-body collapse">
                                    <div class="accordion-inner">
                                        <div class="answer"><%  item.CREATEDON.ToString(); %> here</div>
                                        <p>
                                            <%  item.ANNOUNCEMENT1.ToString(); %>
                                        </p>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
                <%}
                   } %>