Thanks for your reply.
I have created an test example to clarify.

On this form I have one input textbox and one Submit button. On submit I
want to process the data(Text1) in Validate.aspx.vb.
<form action ="../Validate.aspx" method ="post" >
   <input id="Text1" type="text"  /><br />
   <br />
   <input id="Submit1" type="submit" value="submit" />
   </form>
</body>

But when code reaches Validate Page_Load event, then Request.Form.Count
returns 0, when I am expecting Text1 value.

Public Partial Class Validate
   Inherits System.Web.UI.Page

   Protected Sub Page_Load(ByVal sender As Object, ByVal e As
System.EventArgs) Handles Me.Load
       If Request.Form.Count > 0 Then
           Me.TextBox1.Text = Request.Form("Text1")
       End If
   End Sub
End Class

Tell me what am I doing wrong.
Thanks, Mark