repeater,datalist, datagrid的嵌套问题

最新推荐文章于 2025-08-23 20:56:03 发布

转载最新推荐文章于 2025-08-23 20:56:03 发布 · 687 阅读

文章标签：

#datagrid #server #asp #优化 #测试

本文介绍了一个ASP.NET中Repeater控件三层嵌套使用的实例，展示了如何通过设置不同层级的数据源来实现无限级嵌套。此方法适用于需要展示多层次数据的场景。

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常常在csdn上看到有网友问如何才能实现repeater,datalist, datagrid的嵌套问题，下面给出一个3层嵌套的示例，可以无限级嵌套下去

<asp:repeater id="rpt_catalog" onitemdatabound="rpt_catalog_onitemdatabound" runat="server">
<itemtemplate>最顶层repeater，index:<%#container.dataitem%>

<asp:repeater id="rpt_board" onitemdatabound="rpt_board_onitemdatabound" runat="server">
<itemtemplate> 第2层repeater,index:<%#container.dataitem%>

<asp:repeater id="rpt_boardmaster" runat="server">
<itemtemplate> 第3层repeater,index:<%#container.dataitem%>

</itemtemplate>
</asp:repeater>
</itemtemplate>
</asp:repeater>
</itemtemplate>
</asp:repeater>

    private intfirst as integer
    private intsecond as integer

    private sub page_load(byval sender as system.object, byval e as system.eventargs) handles mybase.load
        'put user code to initialize the page here
        dim al as new arraylist
        al.add(0)
        al.add(1)
        rpt_catalog.datasource = al
        rpt_catalog.databind()
    end sub

    sub rpt_catalog_onitemdatabound(byval sender as object, byval e as repeateritemeventargs)
        dim rpt as repeater
        rpt = e.item.findcontrol("rpt_board")
        intfirst = e.item.itemindex

        dim al as new arraylist
        al.add(intfirst & ".0")
        al.add(intfirst & ".1")
        rpt.datasource = al
        rpt.databind()
    end sub

    sub rpt_board_onitemdatabound(byval sender as object, byval e as repeateritemeventargs)
         dim rpt as repeater
        rpt = e.item.findcontrol("rpt_boardmaster")
        intsecond = e.item.itemindex
        dim al as new arraylist
        al.add(intfirst & "." & intsecond & ".0")
        al.add(intfirst & "." & intsecond & ".1")
        rpt.datasource = al
        rpt.databind()
    end sub

代码经过测试，但请自行优化