private void button2_Click(object sender, EventArgs e) 
          {        
              baglanti.Open(); 
              komut.Connection = baglanti; 
              komut.CommandText = "Delete From Tablo1 where tarih='" + dateTimePicker2.Value.ToShortDateString() + "'"; 
              komut.ExecuteNonQuery(); 
              komut.Dispose(); 
              baglanti.Close();      
              ds.Tables["Tablo1"].Clear(); 
              listele();        
          }