Hello Imar ,
I was trying to do the exercise 3 of the chapter 13 about LINQ. I did exactly as you wrote in the answer of that exercise, but i got the following error ;
"Input string was not in a correct format."
I got this error for the following line :
<asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl='<%# "PictureDetails.aspx?Id=" + Eval("Id") %>' >
Can you please help me to solve this problem ?