//Get the details of a particular ogrenci public Ogrenci GetOgrenciData(int?id) { Ogrenci ogrenci = new Ogrenci(); using (SqlConnection con = new SqlConnection(ConnectionString)) { string sqlQuery = "SELECT * FROM Ogrenci WHERE ogrenci_no= " + id; SqlCommand cmd = new SqlCommand(sqlQuery, con); con.Open(); SqlDataReader rdr = cmd.ExecuteReader(); while (rdr.Read()) { cmd.Parameters.AddWithValue("@ogrenci_no", ogrenci.ogrenci_no); cmd.Parameters.AddWithValue("@ogrenci_ad", ogrenci.ogrenci_ad); cmd.Parameters.AddWithValue("@ogrenci_soyad", ogrenci.ogrenci_soyad); cmd.Parameters.AddWithValue("@ogrenci_email", ogrenci.ogrenci_email); cmd.Parameters.AddWithValue("@ogrenci_sifre", ogrenci.ogrenci_sifre); } } return(ogrenci); }