private void paraYatırmaToolStripMenuItem_Click(object sender, EventArgs e)
        {
            frmParaYatirma py = new frmParaYatirma();

            py.MdiParent = this;
            py.Show();
        }
        private void btnParaYatırma_Click(object sender, EventArgs e)
        {
            frmParaYatirma py = new frmParaYatirma();

            py.Show();
        }