Passing a query in a query string to a Button

I have a query srting (http://localhost/test.aspx?id=2992) and I would like to pass the 2992 to a link 
 "Bnview" runat="server" PostBackUrl="Live.aspx?=(something here)" Text="Live" />
 How would I pass that 2992 into the button so that the page will open the proper query string.
 
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