private void aracGirisiEkleToolStripMenuItem_Click(object sender, EventArgs e)
        {
            AciklariKapa();
            frmAracGiris frm = new frmAracGiris();

            frm.MdiParent = this;
            frm.Show();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            if (this.ActiveMdiChild != null)
            {
                this.ActiveMdiChild.Hide();
            }
            frmAracGiris frm = new frmAracGiris();

            frm.MdiParent = this;
            frm.Show();

            printPreviewDialog1.Document = printDocumentAktifAbone;
        }