I have 6 images showing in my itemdetails.aspx the code:

 <asp:Image ID="Image1" CssClass="photo-border" runat="server" ImageUrl='<%# "/images/" + (string)Eval("ImageUrl") %>'
                                AlternateText='<%# (string)Eval("ImageAltText")%>' />
                            <br />
                            <asp:Image ID="Image2" CssClass="photo-border" runat="server" ImageUrl='<%# "/images/" + (string)Eval("ImageUrl1") %>'
                                AlternateText='<%# (string)Eval("ImageAltText")%>' />
                            <br />
                            <br />
                            <asp:Image ID="Image3" CssClass="photo-border" runat="server" ImageUrl='<%# "images/" + (string)Eval("ImageUrl2") %>'
                                AlternateText='<%# (string)Eval("ImageAltText")%>' />
                            <br />
                            <br />
                            <asp:Image ID="Image4" CssClass="photo-border" runat="server" ImageUrl='<%# "images/" + (string)Eval("ImageUrl3") %>'
                                AlternateText='<%# (string)Eval("ImageAltText")%>' />
                            <br />
                            <br />
                            <asp:Image ID="Image5" CssClass="photo-border" runat="server" ImageUrl='<%# "images/" + (string)Eval("ImageUrl4") %>'
                                AlternateText='<%# (string)Eval("ImageAltText")%>' />
                            <br />
                            <br />
                            <asp:Image ID="Image6" CssClass="photo-border" runat="server" ImageUrl='<%# "images/" + (string)Eval("ImageUrl5") %>'
                                AlternateText='<%# (string)Eval("ImageAltText")%>' />

I am not too sure why it only shows ImageUrl1 & 6? Have I not done something here?

Thanks in advance! 

well the first thing that comes to mind

inside the XML or DB

did you create an id for each of the imageurl to correspond with the 2-6 respectively?

<imageUrl>imagename.JPG</imageUrl>
<imageUrl2>imagename2.JPG</imageUrl2>
.
.
<imageUrlx>imagenamex.JPG</imageUrlx>

Your trying to eval a column that dosn't exist (string)Eval("ImageUrl1")

The name of the column is ImageUrl not ImageUrl1 - N

You would of had to add this to your XML or Database table and edit Item.cs (in App_Code folder) accordingly.