Add parameters to LinkButton

Might not even be doing this correctly so I'll explain what I'm trying to do. Very simply I'm trying to create a GridView and within this I will have a button. This button will have some additional parameters added to it (namely an ID) so I would suspect it would look something like #/volunteer.aspx?ID=000000 (with the actual ID added to the end of the link)

So I have my code like this:

<asp:TemplateField>
                                    <ItemTemplate>
                                        <asp:LinkButton runat="server" ID="NewViewReports" CommandName="ViewReports" CommandArgument='<%# Eval("CRM_BusinessGUID", "~/Volunteer.aspx?ID={0}") %>' CssClass="btn btn-primary btn-large" Text="New View Reports &raquo;" />
                                    </ItemTemplate>
                                </asp:TemplateField

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and although the button is created correctly the links are not there but the HTML looks like this:

<a class="btn btn-primary btn-large" id="MainContent_ctl00_GridView1_NewViewReports_0" href="javascript:__doPostBack('ctl00$MainContent$ctl00$GridView1$ctl02$NewViewReports','')">New View Reports »</a>

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Hopefully this is an easy one to sort and I've explained what I'm after so appreciate any advice you guys can offer.

Thanx again