private void barButtonItem8_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            Raporlama r = new Raporlama();

            r.ShowDialog();
        }
        private void btnGrafik_Click(object sender, EventArgs e)
        {
            Raporlama r = new Raporlama();

            r.ShowDialog();
        }