获取ckeditor、填充ckeditor值 问题

Question

页面：
<asp:TextBox id="txtContent" runat="server" TextMode="MultiLine"></asp:TextBox>
<asp:HiddenField  ID="hfContent" runat="server" />
<%--<textarea id="content" cols="6" rows="10" name="content"></textarea>--%>
<script type="text/javascript">    var editor = CKEDITOR.replace('txtContent');
    
    
   
   // var editor = CKEDITOR.replace('content');    CKFinder.SetupCKEditor(editor, '../../ckfinder/'); </script> <script type="text/javascript" language="javascript">
                        $(function() {
                            $("#<%=btnAdd.ClientID %>").click(function() {
                                if (editor.document.getBody().getText() == "") {
                                    alert("提示:请输入内容");
                                    return false;
                                }
                                $("#<%=hfContent.ClientID %>").val(editor.document.getBody().getHtml());
                                return true;
                            })
                        })
                      </script>
后台获取：
 company = new Company();
            company.Type = this.ddlCompanyType.Text;
            company.State = this.rbtYOrN.SelectedValue == "1" ? true : false;
            company.Content = this.txtContent.Text;获取的值是"";
于是我在页面放个隐藏域来放ckeditor的值 这下终于能添加了，但是编辑状态再返回去ckeditor的值又是空。没有填充
高手解决下