Use DataList instead it is easy in DataList
Or
Use Templatefield in gridview
in item template place two lables and two textboxes
<itemtemplate>
<div style="display:inline"><asp:label id="lbl1" runat="server" xmlns:asp="#unknown" /> <asp:label id="lbl2" runat="server" xmlns:asp="#unknown" /></div><br />
<asp:textbox id="txt1" runat="Server"" xmlns:asp="#unknown" />
<asp:textbox id="txt2" runat="server" xmlns:asp="#unknown" />
</itemtemplate>