asp:repeater runat="server" id="repeater1" OnItemDataBound="function2">

itemtemplate>

　　asp:repeater runat="server" id="repeater2">

　　itemtemplate>

　　/itemtemplate>

　　/asp:repeater>

itemtemplate>

/asp:repeater>

private void function1()
{
　　repeater1.datasource = datatable;
　　repeater1.databind();
}

private void function2(object sender,repeateritemeventargs e)

{

　　//判断里层repeater处于外层repeater的哪个位置（alternatingitemtemplate,footertemplate,headertemplate,itemtemplate,separatortemplate）

if(e.item.itemtype == listitemtype.item || e.item.itemtype == listitemtype.alternatingitem)

{

repeater rpt = e.item.findcotrol("repeater2") as repeater;　　//找到里层的repeater对象

datarowview row = (datarowview)e.item.dataitem;　　　　　 //找到分类repeater关联的数据项

int typeid = convert.toint32(row["id"]);　　　　　　　　　　  //获取填充子类的id

rpt.datasource = datatable;

rpt.databind();

}
}