[2005] Need help with pop-up

I need a pop up to show in a button click statement right before a redirect. How can I do this? VS 2005 / .NET 2.0.

Sub MyButton_Click...

' Do stuff

' Display pop-up , wait for user to click 'OK'

Response.Redirect("newpage.aspx");

End Sub

Ok, that code will run on the server - the server simply can't display dialogs directly on the client, but can generate client-side script that will do so.

Code:

---

Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load ''' Or something like that - C#'r...
  myButton.Attributes.Add("onclick", "alert('Some message'); return true;")
End Sub

Sub MyButton_Click(sender As Object, e As EventArgs)
  Response.Redirect("newpage.aspx")
End Sub

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