How to load Text Boxes inside a Gridview Dynamically ?

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False">
<Columns>
<asp:TemplateField HeaderText="ID">
<ItemTemplate>
<asp:Label ID="l1" runat="server" Text='<%#Eval("ID")%>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="NAME">
<ItemTemplate>
<%#Eval("name") %>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="SALARY/Day">
<ItemTemplate>
<asp:Label ID="l2" runat="server" Text='<%#Eval("sperday")%>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="PRESENT">
<ItemTemplate>
<%#Eval("present") %>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="text1" runat="server"  Text='<%#Eval("present") %>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
</Columns>
  </asp:GridView>