public int Yorum(Gunluk gunluk)
        {
            try
            {
                comm.CommandText = "INSERT INTO Gunluk(Yorum,SorumluID,StajyerID,Tarih) VALUES(@Yorum, @SorumluID,@StajyerID,@Tarih)";
                comm.Parameters.AddWithValue("@Yorum", gunluk.Yorum);
                comm.Parameters.AddWithValue("@SorumluID", gunluk.SorumluID);
                comm.Parameters.AddWithValue("@StajyerID", gunluk.StajyerID);
                comm.Parameters.AddWithValue("@Tarih", gunluk.Tarih);

                comm.CommandType = CommandType.Text;
                conn.Open();
                return(comm.ExecuteNonQuery());
            }
            catch (Exception)
            {
                throw;
            }
            finally
            {
                if (conn != null)
                {
                    conn.Close();
                }
            }
        }
        public List <Gunluk> YorumGetir(Gunluk gunluk)
        {
            List <Gunluk> gun = new List <Gunluk>();

            try
            {
                comm.CommandText = "Select * from Gunluk where StajyerID=@StajyerID ";
                comm.Parameters.AddWithValue("@StajyerID", gunluk.StajyerID);
                comm.CommandType = CommandType.Text;
                conn.Open();

                SqlDataReader reader = comm.ExecuteReader();
                while (reader.Read())
                {
                    Gunluk gunlluk1 = new Gunluk()
                    {
                        YorumID   = Convert.ToInt32(reader[0]),
                        Yorum     = reader[1].ToString(),
                        SorumluID = Convert.ToInt32(reader[2]),
                        StajyerID = Convert.ToInt32(reader[3]),
                        Tarih     = reader[4].ToString().TrimEnd('0', ':'),
                    };
                    gun.Add(gunlluk1);
                }

                return(gun);
            }
            catch (Exception)
            {
                throw;
            }
            finally
            {
                if (conn != null)
                {
                    conn.Close();
                }
            }
        }