Dynamic button control with events

Create Dynamic button control with events asp.net with vb.
Put this code in page load event
Dim btn As Button
Dim txt As TextBox
For i As Integer = 0 To 2
btn = New Button
txt = New TextBox
txt.ID = "Textbox" & i
txt.Text = "Textbox" & i
btn.Text = "DynamicButton" & i
btn.ID = "DynamicButton" & i
AddHandler txt.TextChanged, AddressOf Txt_TextChanged
AddHandler btn.Click, AddressOf btn_Click
form1.Controls.Add(btn)
form1.Controls.Add(txt)
Next

Protected Sub btn_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Response.Write("G.Renganathan(UltimateRengan" & CType(sender, Button).ID)
End Sub

Protected Sub Txt_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs)
Response.Write("Hai")
End Sub