麻烦帮忙看下，这模型 问题出在哪儿？谢谢！~~
<ul class="tw_article">
<%
string pic="";
DataTable dt=Get_Data();
DataRow dr;
for(int i=0;i<dt.Rows.Count;i++)
{
dr=dt.Rows
;
pic=dr["titlepic"].ToString();
%>
<li>
<%if(pic!=""){%>
<span class="pic"><a href="<%=Detail_Url(dr)%>" target="<%=Target%>"><img src="<%=dr[%=pic%].ToString()=""?"/e/images/noimage.gif":dr[%=pic%].ToString()%>" border="0" style="<%=TitlePic_Size%>"></a></span>
<%}
%>
<span class="title">
<a href="<%=Detail_Url(dr)%>" target="<%=Target%>" title="<%=Server.HtmlEncode(dr["title"].ToString())%>" style="<%=dr["pa_style"]%>"><%=SubStr(dr["title"].ToStrin(),Title_Num,true)%>
</a>
</span>
<p class="introduct"><%=SubStr(dr["pa_introduct"].ToString(),300,true)%>
</li>
<%
}
%>
</ul> 
