hello ,
Use the <asp:hiddenfield xmlns:asp="#unknown" />
you drag and drop the fields from the toolbar into your page.
<table><tr>
<td>
<asp:HiddenField runat="server" ID="hdnRemarkID" />
</td>
</tr>
</table>
In Code file say .aspx.vb file you can set the value of hidden field like
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
hdnRemarkID.Value = "value"
End Sub
I hope this will help you...
Thanks,
Nilesh Chauhan