Repeater嵌套的两种方案

http://tmouse.cnblogs.com/archive/2006/05/28/256274.html

 

http://support.microsoft.com/default.aspx?scid=kb;en-us;306154#top

 

在做“主页大巴”项目的时候，现有两次遇到要用到Repeater嵌套，但方法不同，如下：

首先是各个科组教师的主页要分类显示，这个好办，因为用户都是按科组申请注册的，只要他的主页类别是个人主页，就可以做好父子绑定GroupID

程序参考：http://support.microsoft.com/default.aspx?scid=kb;en-us;306154

其二是在个人主页里按栏目分类显示文章时，按理父子关系该是文章的ClassID的父目录是栏目的ClassID，但是有的栏目并没有2级目录，所以文章直接添加在它上面，这样前面的父子关系就不成立，会出现“不能启用此约束，因为不是所有的值都具有相应的父值”的错误报告，后来按这个错误搜索，最后找到优快云里的这个帖子，csdn的saucer(思归) ( )老大给了解决方法，我修改了一下，应用到我的程序中。

程序参考：http://community.youkuaiyun.com/Expert/topic/4229/4229787.xml?temp=.8814051

我修改的程序如下：
aspx中：

< asp:Repeater id = " repLM "  runat = " server " >
     < ItemTemplate >
         < table border = " 0 "  style = " BORDER-COLLAPSE: collapse "  width = " 98% "  id = " table8 "   class = " list " >
             < tr >
                 < td colspan = " 2 " >
                     < div align = " center " >
                         < table border = " 0 "  style = " BORDER-COLLAPSE: collapse "  width = " 100% "  id = " table9 " >
                             < tr >
                                 < td  class = " listTop " >& nbsp; < img src = " <%=strStylePath%>dot2.gif " >& nbsp; <% # DataBinder.Eval(Container.DataItem, " ClassName " )  %></ td >
                             </ tr >
                             < tr >
                                 < td >
                                     < table border = " 0 "  style = " border-collapse: collapse "  width = " 100% "  id = " table10 " >
                                         < asp:Repeater id = " repWZ "  runat = " server " >
                                             < ItemTemplate >
                                                 < tr >
                                                     < td >< img border = " 0 "  src = " <%=strStylePath%>list.gif "  width = " 15 "  height = " 6 " >< a href = ' Show.aspx?AtcID=<%# DataBinder.Eval(Container.DataItem,"AtcID") %> ' >< font color = ' <%# DataBinder.Eval(Container.DataItem,"TitleColor") %> ' ><% # DataBinder.Eval(Container.DataItem, " Title " )  %></ font ></ a >
                                                     </ td >
                                                 </ tr >
                                             </ ItemTemplate >
                                         </ asp:Repeater >
                                     </ table >
                                 </ td >
                             </ tr >
                         </ table >
                     </ div >
                 </ td >
             </ tr >
             < tr >
                 < td width = " 87% " >
                 </ td >
                 < td width = " 12% "   class = " more " >< span lang = " zh-cn " > 更多 </ span ></ td >
             </ tr >
         </ table >
     </ ItemTemplate >
</ asp:Repeater >

cs中的程序如下：

protected  System.Web.UI.WebControls.Repeater repLM;
protected  System.Web.UI.WebControls.Repeater repWZ;

 

// 先邦定栏目
string  strSQL1 = " select ClassID,ClassName from xClass where ParentID=0 and PageID= " + strPageID;
SqlDataAdapter da1 = new  SqlDataAdapter(strSQL1,myConn);
da1.Fill(ds, " LM " );
repLM.DataSource = ds.Tables[ " LM " ].DefaultView;
repLM.DataBind();        
myConn.Close();

在外面的Repeater的ItemDataBound事件里写如下程序：

private   void  repLM_ItemDataBound( object  sender, System.Web.UI.WebControls.RepeaterItemEventArgs e)
{
    
    if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) 
    { 
        Repeater rpColumnNews = (Repeater) e.Item.FindControl("repWZ"); 
        //找到分类Repeater关联的数据项 
        DataRowView rowv = (DataRowView)e.Item.DataItem; 
        //提取分类ID 
        string strClassID = Convert.ToString(rowv["ClassID"]); 
        //里面的Repeater
        string strSQL2="select xArticle.AtcID,xArticle.Title,xArticle.TitleColor from xArticle,xClass where ";
        strSQL2+=" (xArticle.ClassID=xClass.ClassID and xClass.ClassID="+strClassID+") or (xArticle.ClassID=xClass.ClassID and xClass.ParentID="+strClassID+")";
        SqlDataAdapter da2=new SqlDataAdapter(strSQL2,myConn);
        ds=new DataSet();
        da2.Fill(ds,"WZ");
        rpColumnNews.DataSource=ds.Tables["WZ"].DefaultView;
        rpColumnNews.DataBind();        
        myConn.Close();
    } 

}