请教高手! ( 积分: 50 )

我在运行<asp:HyperLink id=&quot;HyperLink1&quot;
runat=&quot;server&quot;
NavigateUrl='<%# &quot;../default.aspx?DepartmentID=&amp;&quot;+ Request.QueryString[&quot;DepartmentID&quot;]+ &quot;&amp;DepartmentIndex=&quot;
+ Request.QueryString[&quot;DepartmentIndex&quot;] + &quot;&amp;CategoryID=&quot;
+ DataBinder.Eval(Container.DataItem, &quot;categoryID&quot + &quot;&amp;CategoryIndex=&quot;
&amp;+ Container.ItemIndex %>' Text='<%# DataBinder.Eval(Container.DataItem, &quot;Name&quot %>' CssClass=&quot;CategoryUnselected&quot;>HyperLink</asp:HyperLink>代码时出现:
运算符“&amp;”无法应用于“string”和“int”类型的操作数
哪位高手帮忙解决一下 谢谢

<asp:HyperLink id=&quot;HyperLink1&quot;
runat=&quot;server&quot;
NavigateUrl='<%# &quot;../default.aspx?DepartmentID=&amp;&quot;+ Request.QueryString[&quot;DepartmentID&quot;]+ &quot;&amp;DepartmentIndex=&quot;
+ Request.QueryString[&quot;DepartmentIndex&quot;] + &quot;&amp;CategoryID=&quot;
+ DataBinder.Eval(Container.DataItem, &quot;categoryID&quot + &quot;&amp;CategoryIndex=&quot;
+ Container.ItemIndex %>' Text='<%# DataBinder.Eval(Container.DataItem, &quot;Name&quot %>' CssClass=&quot;CategoryUnselected&quot;>HyperLink</asp:HyperLink>
你改成这样看行不行啊