HI
try like this,
in parent page:
<asp:HyperLink ID="hlnk" NavigateUrl='<%# string.Format("ViewProductDetail.aspx?ProductID={0}&Picture={1}", Eval("ProductID"), Eval("Picture")) %>' runat="server">
in details page:
int ProductID = Convert.ToInt32(Request.QueryString["ProductID"]);
string picture = "~/Image/" + Request.QueryString["Picture"];
Image1.ImageUrl = picture;