ASP.NET Repeater Template, Conditional Code for every Nth element

Question

I'm using an asp.net repeater to create a bunch of images. The image markup is all the same so the standard <ItemTemplate> is fine.

However, I want to wrap K images in a div. Lets say I bind 25+ images to the repeater and I want 5 images per div. How do I go about conditionally creating the start and close tags for the div?

Is this a case better suited for a for loop.

Answer 1

This should work for you, with no need for anything in the code behind (other than binding the repeater..):

<asp:Repeater ID="repImages" runat="server">
<HeaderTemplate><div></HeaderTemplate>

<ItemTemplate>
<%# (Container.ItemIndex != 0 && Container.ItemIndex % 5 == 0) ? @"</div><div>" : string.Empty %>
<asp:Image ID="imgGallery" runat="server" ImageUrl='<%# /* your code  here */ %>' />
</ItemTemplate>

<FooterTemplate></div></FooterTemplate>
</asp:Repeater>