how to add folder name to navigate url

[New User]

asp.net framework 1.1 and c#

I am trying to create thumbnail images dynamically and load them on a web
page. When I click on a thumbnail image it opens the large version of it.

I use DataList to display the images. All my images are in a folder call
'CocoaImages". I have the following code in my DataList template to make data
bound and make the thumbnail images clickable. All my thumbnail images are
created and displayed as expected. When I click on the small images I get 404
error because I am missing ‘CocoaImages’ folder name in my navigateUrl.

My question is how can I add the folder name to the NavigateUrl in the
following code so that the large images will display correctly when the
smaller ones ares clicked? Appreciate any help. Thanks

<ItemTemplate>
<asp:HyperLink Runat=’server’ ImageUrl=’<%#
string.Concat(“CreateThumbmail.aspx?file=cocoaimages/â€,DataBinder.Eval(Container.DataItem,
“Nameâ€)) %>’ NavigateUrl=’<%# DataBinder.Eval(Container.DataItem, “Nameâ€) %>’
ID=â€Hyperlink1â€>
</asp:HyperLink>
</ItemTemplate>