困扰我一天了 求救

我用sql2008 远程连接SQL2005 前几天都没问题 可今天明明远程数据库有数据 可我的VS2008运行起来后死活取不到值 麻烦高手帮我解决下，谢谢了！简单代码如下 SetClassList可以取到值
 <tbody>
                    <%
                        string ss = "";
                        
                    string classcss;
for(int i = 0 ; i < SetClassList.Count ; i ++)
                    {


                        

                        
                    if (i % 2 == 0)
classcss = "bg";
else
classcss = "";
%>

                       <tr class="<%=classcss%>">
                        <td width="17%" height="22"><div align="center">[ <span class="STYLE6"><a href="" target="_blank" class="black"><%=SetClassList[i].LanClassName%></a></span> ] </div></td>

                        <td width="74%">
                        <%
                            DalTblWebUrl dal = new DalTblWebUrl();
//问题就出在这 classlist 还是空  明明数据库有值  sql语句绝对没问题 我在sql查询语句直接粘贴过去可以取到值
                            IList<TblWebUrl> ClassList = dal.Select(3, " where LanClassoneid="+SetClass[i].lanClassId);                            for (int j = 0; j < ClassList.Count; j++)
                            {
                               
                                ss=ClassList[j].LanWebTitle;
                            }   
                         %>
                         <%=ss %>
                         

</td>

                        <td width="9%"><div align="center">
<a  href="" target="_blank">更多&gt;&gt;</a></div>
</td>
                      </tr>
  <%}%>
                      
                    </tbody>