Creating Custom Button control using Asp.Net

[VijaySofist]

Hi All!

Somebody Please Help/Guide me to complete my module.

Tools Used
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Asp.Net Server Control (Asp.Net 3.5)
Windows XP
Code Behind is visual basic

My Module
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I want to create a Button control. When it is clicked a function named GoNext() will be called and the definition of the GoNext() will be given in the code behind of the EndUser WebForm(i.e where the control is going to be used).

My Source Code is:
------------------

Imports System
Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Text
Imports System.Web
Imports System.Web.UI
Imports System.Web.UI.WebControls

Namespace SfNextCmd
    <DefaultProperty("Text"), ToolboxData("<{0}:SfNextCmd runat=server></{0}:SfNextCmd>")> _
   Public MustInherit Class SfNextCmd
        Inherits Button
        Public MustOverride Function GoNext()

        Private Sub SfNextCmd_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Click
            GoNext()
        End Sub
    End Class
End Namespace

Also if it is possible thro SilverLight Please send me the source code.

Thanks and Regards
Vijay. R