>From a Click() event of a button control, I would like to change its width. I have tried this but this gives me an error at compile this:

    Private Sub ShowText_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ShowText.Click
        ShowText.Width=400
    End Sub

Change to

    Private Sub ShowText_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ShowText.Click
        ShowText.Width = New System.Web.UI.WebControls.Unit("400px")
    End Sub

Hope that helps...