Protected Sub Gw_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles Gw.RowDataBound
        If e.Row.RowType = DataControlRowType.DataRow Then

            Dim attivo As Boolean = System.Web.UI.DataBinder.Eval(e.Row.DataItem, "attivo")

            Dim Chk As CheckBox = CType(e.Row.Cells(0).FindControl("Checkbox_ID"), CheckBox)

            Chk.Checked = attivo

            If attivo Then
                Chk.Enabled = False
            Else
                Chk.Enabled = True
            End If
        End If
    End Sub