Dynamic pages in asp.net

Question

Hi,

 

I want to generate dynamic pages in asp.net . but i dun't know how to pass link id to asp.cs file. 

here is my code to pass value

<asp:HyperLink runat="server" ID="hl" NavigateUrl='<%#"Home.aspx?Newsid="+ Eval("ID") %>' Text='<%# Eval("CategoryName") %>'></asp:HyperLink>

 i want to get Newsid value but how??