private void btnDuzenle_Click(object sender, EventArgs e)
        {
            string            secilen = gridView1.GetFocusedRowCellValue(colKullaniciAdi).ToString();
            FrmKullaniciIslem frm     = new FrmKullaniciIslem(kullanicidal.GetByFilter(context, c => c.KullaniciAdi == secilen));

            frm.ShowDialog();
            if (frm.saved)
            {
                Listele();
            }
        }
        private void btnEkle_Click(object sender, EventArgs e)
        {
            FrmKullaniciIslem frm = new FrmKullaniciIslem(new Entities.Tables.Kullanici());

            frm.ShowDialog();
        }