c# hyperlink to a web form

I have two questions,

In books.aspx
I am adding a hyperlink  like this:
<Columns>
                <asp:HyperLinkField HeaderText="SHOW DETAILS" Text ="Details" DataNavigateUrlFields="ISBN" DataNavigateUrlFormatString="Default.aspx?id={0}" />
            </Columns>

How can I get the link to show as the last and not the first column?

Secondly,
this was an experiment to link it to Default.aspx
I want to pass the ISBN field of the row to a new web form
I am going to redirect this page to a new Web Form  called details.aspx
in details.aspx, i creat an object of a .cs class with the isbn which will be passed as the id from the books.aspx hyperlink field.

How do i get the id (string) passed to the new page???

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