public bool Guncelle(Calisan calisan)
        {
            string sorguCumlesi = "Update Calisanlar SET Adi = @p1, SoyAdi = @p2, TCKimlikNo = @p3, PersonelNo = @p4, DogumTarihi= @p5, Departman = @p6, Unvan= @p7, Durumu = @p8 WHERE Id = @p9";

            try
            {
                using (SQLiteCommand command = new SQLiteCommand(sorguCumlesi, SQLiteBaglanti.Connection))
                {
                    command.Parameters.AddWithValue("@p1", calisan.Adi);
                    command.Parameters.AddWithValue("@p2", calisan.SoyAdi);
                    command.Parameters.AddWithValue("@p3", calisan.TCKimlikNo);
                    command.Parameters.AddWithValue("@p4", calisan.PersonelNo);
                    command.Parameters.AddWithValue("@p5", calisan.DogumTarihi.ToString("yyyy.MM.dd"));
                    command.Parameters.AddWithValue("@p6", calisan.Departman);
                    command.Parameters.AddWithValue("@p7", calisan.Unvan);
                    command.Parameters.AddWithValue("@p8", calisan.Durumu);
                    command.Parameters.AddWithValue("@p9", calisan.Id);
                    SQLiteBaglanti.BaglantiAc();
                    command.ExecuteNonQuery();
                }
                return(true);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);

                return(false);
            }
            finally
            {
                SQLiteBaglanti.BaglantiKapat();
            }
        }
        public bool Kaydet(Calisan calisan)
        {
            string sorguCumlesi = "INSERT INTO Calisanlar (Adi,SoyAdi,TCKimlikNo,PersonelNo,DogumTarihi,Departman,Unvan,Durumu) Values (@p1,@p2,@p3,@p4,@p5,@p6,@p7,@p8)";

            try
            {
                using (SQLiteCommand command = new SQLiteCommand(sorguCumlesi, SQLiteBaglanti.Connection))
                {
                    command.Parameters.AddWithValue("@p1", calisan.Adi);
                    command.Parameters.AddWithValue("@p2", calisan.SoyAdi);
                    command.Parameters.AddWithValue("@p3", calisan.TCKimlikNo);
                    command.Parameters.AddWithValue("@p4", calisan.PersonelNo);
                    command.Parameters.AddWithValue("@p5", calisan.DogumTarihi.ToString("yyyy.MM.dd"));
                    command.Parameters.AddWithValue("@p6", calisan.Departman);
                    command.Parameters.AddWithValue("@p7", calisan.Unvan);
                    command.Parameters.AddWithValue("@p8", calisan.Durumu);
                    SQLiteBaglanti.BaglantiAc();
                    command.ExecuteNonQuery();
                }
                return(true);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);

                return(false);
            }
            finally
            {
                SQLiteBaglanti.BaglantiKapat();
            }
        }
        public Calisan Getir(string kosulCumlesi)
        {
            Calisan _calisan = null;

            try
            {
                int _sonuc = 0;
                using (SQLiteCommand command = new SQLiteCommand($"SELECT COUNT (*) FROM Calisanlar {kosulCumlesi}", SQLiteBaglanti.Connection))
                {
                    SQLiteBaglanti.BaglantiAc();
                    _sonuc = Convert.ToInt32(command.ExecuteScalar());
                }
                if (_sonuc > 1)
                {
                    MessageBox.Show("Yapılan sorgu sonucunda 1'den fazla kayıt bulundu...\nLütfen daha fazla kriter ile arama yapınız...");
                }
                else if (_sonuc == 1)
                {
                    using (SQLiteCommand command = new SQLiteCommand($"SELECT * FROM Calisanlar {kosulCumlesi}", SQLiteBaglanti.Connection))
                    {
                        using (SQLiteDataReader reader = command.ExecuteReader())
                        {
                            while (reader.Read())
                            {
                                _calisan = new Calisan
                                {
                                    Id          = Convert.ToInt32(reader["Id"]),
                                    Adi         = reader["Adi"].ToString(),
                                    SoyAdi      = reader["SoyAdi"].ToString(),
                                    TCKimlikNo  = reader["TCKimlikNo"].ToString(),
                                    PersonelNo  = reader["PersonelNo"].ToString(),
                                    DogumTarihi = Convert.ToDateTime(reader["DogumTarihi"]),
                                    Departman   = reader["Departman"].ToString(),
                                    Unvan       = reader["Unvan"].ToString(),
                                    Durumu      = reader["Durumu"].ToString()
                                };
                            }
                        }
                    }
                }
                return(_calisan);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
                return(null);
            }
            finally
            {
                SQLiteBaglanti.BaglantiKapat();
            }
        }
        public List <Calisan> Listele(string kosulCumlesi)
        {
            List <Calisan> calisanlar = new List <Calisan>();

            try
            {
                using (SQLiteCommand command = new SQLiteCommand($"SELECT * FROM Calisanlar {kosulCumlesi}", SQLiteBaglanti.Connection))
                {
                    SQLiteBaglanti.BaglantiAc();
                    using (SQLiteDataReader reader = command.ExecuteReader())
                    {
                        while (reader.Read())
                        {
                            Calisan _calisan = new Calisan
                            {
                                Id          = Convert.ToInt32(reader["Id"]),
                                Adi         = reader["Adi"].ToString(),
                                SoyAdi      = reader["SoyAdi"].ToString(),
                                TCKimlikNo  = reader["TCKimlikNo"].ToString(),
                                PersonelNo  = reader["PersonelNo"].ToString(),
                                DogumTarihi = Convert.ToDateTime(reader["DogumTarihi"]),
                                Departman   = reader["Departman"].ToString(),
                                Unvan       = reader["Unvan"].ToString(),
                                Durumu      = reader["Durumu"].ToString()
                            };
                            calisanlar.Add(_calisan);
                        }
                    }
                    return(calisanlar);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
                return(null);
            }
            finally
            {
                SQLiteBaglanti.BaglantiKapat();
            }
        }
 public bool Sil(string kosulCumlesi)
 {
     try
     {
         using (SQLiteCommand command = new SQLiteCommand($"DELETE FROM Calisanlar {kosulCumlesi}", SQLiteBaglanti.Connection))
         {
             SQLiteBaglanti.BaglantiAc();
             command.ExecuteNonQuery();
         }
         return(true);
     }
     catch (Exception ex)
     {
         MessageBox.Show(ex.Message);
         return(false);
     }
     finally
     {
         SQLiteBaglanti.BaglantiKapat();
     }
 }
 public bool Sil(int id)
 {
     try
     {
         using (SQLiteCommand command = new SQLiteCommand($"DELETE FROM Calisanlar where Id=@p1", SQLiteBaglanti.Connection))
         {
             command.Parameters.AddWithValue("@p1", id);
             SQLiteBaglanti.BaglantiAc();
             command.ExecuteNonQuery();
         }
         return(true);
     }
     catch (Exception ex)
     {
         MessageBox.Show(ex.Message);
         return(false);
     }
     finally
     {
         SQLiteBaglanti.BaglantiKapat();
     }
 }