Use ItemTemplate.
You can add controls in
<asp:itemtemplate xmlns:asp="#unknown">your controls </asp:itemtemplate>
as in Example
<asp:TemplateField HeaderText="FirstName" SortExpression="FirstName">
<EditItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" Text='<%#
Bind("FirstName") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%#
Bind("FirstName") %>'></asp:Label>
<asp:TextBox ID="TextBox2" runat="server" Text='<%#
Bind("FirstName") %>'></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>