For example add your link button to TemplateField and you can add command argument and implement GridViewRowCommand and take appropriate action based on CommandName.
<asp:templatefield headertext="Payer" controlstyle-width="100%" xmlns:asp="#unknown">
<itemtemplate>
<asp:linkbutton id="lbPayer" runat="server" text="<%# Eval("Payer") %>" commandargument="<%# Eval("Payer") %>" commandname="ViewPayer"></asp:linkbutton>
</itemtemplate>
<controlstyle width="100%"></controlstyle>
</asp:templatefield>