public RezervasyonListe() { InitializeComponent(); this.FormClosed += new FormClosedEventHandler(Form1_FormClosed); dataGridView1.DataSource = null; dataGridView1.Rows.Clear(); dataGridView1.Refresh(); Admin admin = new Admin(); OleDbDataAdapter dAdapter = admin.RezervasyonListele(); DataTable dataTable = new DataTable(); DataSet ds = new DataSet(); admin.RezervasyonListele().Fill(dataTable); dataGridView1.DataSource = dataTable; dAdapter.Dispose(); }