asp.net 隐藏 image 的问题

Question

<asp:Repeater ID="Repeater3" runat="server">
                  <ItemTemplate>
                 <div class="newsL">
                 <div class="newsL1"><a href="cases_show.aspx?id=<%#Eval("id")%>"><%#Eval("CasusTitle")%></a> </div>
                 <div class="newsL2"><a href="<%#Eval("uRL") %>"><asp:Image ID="Image1" ImageUrl="~/images/btnd3.jpg" runat="server" /></a></div>
                </div>
                  </ItemTemplate>
                  <AlternatingItemTemplate>
                  <div class="newsL">
                 <div class="newsL1"><a href="cases_show.aspx?id=<%#Eval("id")%>"><%#Eval("CasusTitle")%></a> </div>
                 <div class="newsL2"><a href="<%#Eval("uRL") %>"><asp:Image ID="Image1" ImageUrl="~/images/btnd3.jpg" runat="server" /></a></div>
                </div>
                  </AlternatingItemTemplate>
                  </asp:Repeater>如何<%#Eval("uRL") %>为空的我想把Image  隐藏掉
我实现不了，请教

Answer 1

<asp:Image ID="Image1" ImageUrl="~/images/btnd3.jpg" runat="server" Visible='<%#Eval("uRL")==null?false:true %> '/>
or set this Image's style="diplay:none"

Answer 2

如果没有什么必要，asp:image还是少用，最好用<img />

Answer 3

遍历每一项，代码如下for(int i=0;i<Repeater1.Items.Count;i++)//Repeater1是你的Repeater的ID
{
   Image Image1=(Image)Repeater1.Items[i].FindControl("Image1");
   if(Image1.ImageUrl==null)
        Image1.Visible=false;
}