private void barButtonItem2_ItemClick(object sender, ItemClickEventArgs e)
        {
            HastaArama2 hastaİslem = new HastaArama2();

            //hastaİslem.MdiParent = this;
            hastaİslem.Show();
        }
        private void button6_Click(object sender, EventArgs e)
        {
            HastaArama2 araHasta = new HastaArama2();

            araHasta.Show();
        }