Bind List(Of String) to Repeater
===

How can I bind a simple list of strings to a repeater?

    Protected Sub Page_Load(sender As Object, e As System.EventArgs)
        
        'create sample data:
        Dim photos As New List(Of String)
        photos.Add("large1.jpeg")
        photos.Add("large2.jpeg")
        photos.Add("large3.jpeg")
        photos.Add("large4.jpeg")
        photos.Add("large5.jpeg")
        
        'bind data:
        Repeater1.DataSource = photos
        Repeater1.DataBind()
                
    End Sub



The HTML is simply:

            <asp:Repeater ID="Repeater1" runat="server" ClientIDMode="Predictable">
                <HeaderTemplate><ul></HeaderTemplate>
                <FooterTemplate></ul></FooterTemplate>
                <SeparatorTemplate>
                    <li>
                        <asp:Image ID="img_photo" runat="server" ImageUrl="<%# Container.DataItem %>" /></li>
                </SeparatorTemplate>
            </asp:Repeater>


The value from Container.DataItem is always empty.

Any ideas?