Help Needed In dynamic control and viewstate.

You can acheive that, but bit complicated ,but once understood
it become more simpler

What you have to do is, Shift your code to Init method as
 If (Request.Form(T1.UniqueID) <> String.Empty) Then
            For i As Integer = 0 To Integer.Parse(Request.Form(T1.UniqueID)) Step 1
                Dim t As New TextBox()
                t.Width = New Unit(100)
                p.Controls.Add(t)
            Next
            Dim b As New Button()
            b.Width = New Unit(100)
            b.Text = "Save"
            p.Controls.Add(b)
        End If

Hope this is helped, Check this is correct answer if it helped