Repeater判断绑定数据?不知如何搞?请问

Repeater判断绑定数据?不知怎么搞?请教
我想在Repeater在绑定的时候判断
  <tr style="color: #82B01C;">
                                <th align="right" width="100px">
                                    回复：
                                </th>
                                <th align="left">
                                </th>
                                <th align="right">
                                    <%#Eval("ReplyTime") %>
                                </th>
                            </tr>
                            <tr>
                                <td align="right" class="mailtit">
                                    内容：
                                </td>
                                <td colspan="2">
                                    <%#Eval("ReplyContent") %>
                                </td>
                            </tr>
这些代码是否在显示?在CS页面中建立一个全局变量   在ItemDataBound中进行绑定  用这个全局变量来判断  做不到?请问有没有更合适的方法,谢谢?

<asp:Repeater ID="repMsgList" runat="server" 
                    onitemdatabound="repMsgList_ItemDataBound"> 
 
                    <ItemTemplate>
                        <table width="100%" style="line-height: 25px; border: 0;">
                            <tr style="color: #057dcd;">
                                <th align="right" width="100px">
                                    <asp:HiddenField ID="hdfvalue" Value='<%#Eval("replytime") %>' runat="server" />
                                    <%#Container.ItemIndex+1 %>. 昵称：
                                </th>
                                <th align="left">
                                    <%#Eval("Sender") %>
                                </th>
                                <th align="right">
                                    <%#Eval("RecTime") %>
                                </th>
                            </tr>
                            <tr>
                                <td align="right" style="color: #d33;">
                                    内容：
                                </td> 
 
                                <td>
                                    <%#Eval("Content") %>
                                </td>
                            </tr>
                            <% if (statetype)
                               {
                            %>                            <tr style="color: #82B01C;">
                                <th align="right" width="100px">
                                    回复：
                                </th>
                                <th align="left">
                                </th>
                                <th align="right">
                                    <%#Eval("ReplyTime") %>
                                </th>
                            </tr>
                            <tr>
                                <td align="right" class="mailtit"> 
 
                                    内容：
                                </td>
                                <td colspan="2">
                                    <%#Eval("ReplyContent") %>
                                </td>
                            </tr>
                            <%} %>
                        </table>
                    </ItemTemplate>
                </asp:Repeater>

cs页面
建立一个 public bool statetype=true;全局变量
在 protected void repMsgList_ItemDataBound(object sender, RepeaterItemEventArgs e)
        {
            if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
            {
                HiddenField hd = e.Item.FindControl("hdfvalue") as HiddenField;
                if (hd.Value.Trim() == "" || hd.Value.Trim() == null)
                {
                    statetype = false;
                }
                else
                {
                    statetype = true;
                }

            }
        }
在前面页面中判断是True还是False   但是不能实现 

[解决办法]
不用itemdatabound
用三目运算符


<%#Eval("replytime") %>.ToStrin()==""?"display:none":""
[解决办法]
<%#Eval("replytime").ToString()==""?"display:none":"" %>

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