problem in hide image control in datalist

You need to decide what is the value stored if image is not present. it is not working because that person checks for null and if you have blank in database the condition will fail

i want check for null if image was null in database it doesn't show div

 here didn't show div i checked both position

1-there was null in database

2-there was an image in database in both position didn't show div

Share the datalist html

  <asp:DataList ID="DDLC" runat="server">
                      <ItemTemplate>
                      <div id="Dmainart">
                      <div id="Dart1">
                      <div id="Dart1_1">
       
                      <div id="Dart1_12">
                     <div id="Dart1_I1" runat="server" visible='<%# !string.IsNullOrEmpty(Eval("image2").ToString())%>'>
                      <a href='<%#Eval("image2","../image/house/article/image/{0}")%>' title='<%#Eval("name")%>' class="thickbox">
                      <asp:image ID="image1" runat="server" CssClass="TPH" ImageUrl='<%#Eval("image2","image/house/article/image/{0}")%>' Width="90px" Height="64px"/>
                     </a>
                      </div>
                      <div id="Dart1_I2" runat="server" visible='<%# !string.IsNullOrEmpty(Eval("image").ToString())%>'><a href='<%#Eval("image1","../image/house/article/image/{0}")%>' title='<%#Eval("name")%>' class="thickbox">
                      <asp:image ID="image2" runat="server" CssClass="TPH" ImageUrl='<%#Eval("image1","image/house/article/image/{0}")%>' Width="90px" Height="64px"/>
                     </a> </div>
                      
                      </div>
                      

in 13 th line of the above code div with id "Dart1_I2" is made visible on the bases of of "image" column while in the link inside the same div you are binding the different column ...viz., "image1" shouldnt it both be either "image" or "image1.....?"