Make use of TemplateField and add multiple HyperLinks as shown below
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns = "false">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl = '<%#Eval("Column1", "Page1.aspx?Id={0}") %>'></asp:HyperLink>
<asp:HyperLink ID="HyperLink2" runat="server" NavigateUrl = '<%#Eval("Column2", "Page1.aspx?Id={0}") %>'></asp:HyperLink>
<asp:HyperLink ID="HyperLink3" runat="server" NavigateUrl = '<%#Eval("Column3", "Page1.aspx?Id={0}") %>'></asp:HyperLink>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>