如何绑定嵌套中继器？

Question

我有一个服务页面，显示服务的详细信息，并有一个子部分，如服务功能和收费。我创建了两个用于功能和收费的中继器。请参考下面的SQL表图像的详细资料：

但我不知道如何该层级数据绑定到嵌套的中继器。这里是我的代码：

<!--Nested Repeater Section--> 
    <asp:Repeater ID="ServiceDetailsRepeater" runat="server" 
     onitemdatabound="ServiceDetailsRepeater_ItemDataBound"> 
    <ItemTemplate> 
     <asp:HiddenField ID="service_id" runat="server" Value='<%#Eval("Id")%>'/> 
    <h3><a name='<%#Eval("Id")%>'></a><%#Eval("Service_name")%></h3> 
    <img src='<%# "images/"+ Eval("ImageName")%>' alt="picture" width="48" height="48" class="img" /> 
    <p><%#Eval("Service_desc")%></p> 
    <div id="Div1" class="clr" runat="server">&nbsp;</div> 
    <div id="Div2" class="box" runat="server"> 
     <div id="Div3" class="box_t" runat="server"> 
      <asp:Panel ID="Panel_ServiceFeature" runat="server" class="box_b"> 
     <h2>Features</h2> 
     <ul style="font-family:Arial, Helvetica, sans-serif;font-size:11px;color:#5f5f5f"> 
      <asp:Repeater ID="ServiceFeatureRepeater" runat="server"> 
      <ItemTemplate> 
      <li><%#Eval("Feature_Text")%></li> 
      </ItemTemplate> 
      </asp:Repeater> 
      </ul> 
      </asp:Panel> 
    </div> 
    </div> 
    <div id="Div5" class="clr" runat="server">&nbsp;</div> 
    <div id="Div6" class="box" runat="server"> 
     <div id="Div7" class="box_t" runat="server"> 
      <asp:Panel ID="Panel_ServiceCharge" runat="server" class="box_b"> 
     <h2>Charges</h2> 
     <table style="font-family:Arial, Helvetica, sans-serif;font-size:11px;color:#5f5f5f"> 
     <tr><td></td> 
     <td>Rs.</td><td>&nbsp;</td><td align="left">Months</td></tr> 
     <asp:Repeater ID="ServiceChargeRepeater" runat="server"> 
     <ItemTemplate> 
     <tr> 
     <td><img src="images/sub_nav.gif" width="18px" height="14px" alt=""/></td> 
     <td>Rs. <%#String.Format("{0:#,###}", Eval("Charges_Per_Month"))%></td> 
     <td>&nbsp;</td> 
     <td><%#Eval("No_Of_Month")%> Months</td> 
     </tr> 
      </ItemTemplate> 
      </asp:Repeater> 
     </table> 
      </asp:Panel> 
    </div> 
</div> 
<div id="Div9" class="clr" runat="server"></div> 
    </ItemTemplate> 
    </asp:Repeater> 
    <!--End Section--> 

最后，my web site page这是我生活的网站服务页面视图。此页面是静态的，但现在我想将此服务详细信息与数据库绑定。

Answer 1

一种方式做到这一点是简单地将内Repeater的DataSource属性绑定到一个合适的收集。例如。是这样的：

<asp:Repeater ID="ServiceDetailsRepeater" runat="server" 
     DataSourceID="SqlDataSource1"> 

    <asp:Repeater ID="ServiceFeatureRepeater" runat="server" 
     DataSource="<%# DatabaseHelper.GetFeatures(Eval("Id")) %>"> 
     ... 
    </asp:Repeater> 

    <asp:Repeater ID="ChargesRepeater" runat="server" 
     DataSource="<%# DatabaseHelper.GetCharges(Eval("Id")) %>"> 
     ... 
    </asp:Repeater> 

</asp:Repeater> 

我也检查，如果没有特色或收费被发现特定的服务的话，面板必须关闭。所以我直接从代码中做背后

UPDATE

如果您更舒适的代码隐藏，继续这样做，但你也可以做到这一点声明通过数据绑定Repeater的Visible财产，例如：

... 
    <asp:Repeater ID="ServiceFeatureRepeater" runat="server" 
     DataSource="<%# DatabaseHelper.GetFeatures(Eval("Id")) %>" 
     Visible="<%# DatabaseHelper.HasFeatures(Eval("Id")) %>" 
     > 
     ... 
    </asp:Repeater> 
    .... 

Answer 2

if (!Page.IsPostBack) 
      { 
       ServiceListRepeater.DataSource = DatabaseHelper.GetSummaryOfActiveServices(); 
       ServiceListRepeater.DataBind(); 
       ServiceDetailsRepeater.DataSource = DatabaseHelper.GetSummaryOfActiveServices(); 
       ServiceDetailsRepeater.DataBind(); 
      } 

protected void ServiceDetailsRepeater_ItemDataBound(object sender, RepeaterItemEventArgs e) 
    { 
     RepeaterItem item = e.Item; 
     if ((item.ItemType == ListItemType.Item) ||(item.ItemType == ListItemType.AlternatingItem)) 
     { 
      HiddenField service_id = (HiddenField)item.FindControl("service_id"); 
      Repeater service_features = (Repeater)item.FindControl("ServiceFeatureRepeater"); 
      service_features.DataSource = DatabaseHelper.GetFeatureSummary(int.Parse(service_id.Value.ToString())); 
      service_features.DataBind(); 
      if (service_features.Items.Count == 0) 
      { 
       Panel Panel_ServiceFeature = (Panel)item.FindControl("Panel_ServiceFeature"); 
       Panel_ServiceFeature.Visible = false; 
      } 
      Repeater service_charges =(Repeater)item.FindControl("ServiceChargeRepeater"); 
      service_charges.DataSource = DatabaseHelper.GetChargeSummary(int.Parse(service_id.Value.ToString())); 
      service_charges.DataBind(); 
      if (service_charges.Items.Count == 0) 
      { 
       Panel Panel_ServiceCharge = (Panel)item.FindControl("Panel_ServiceCharge"); 
       Panel_ServiceCharge.Visible = false; 
      } 
     } 
    }