//TWORZENIE TABELI NADANIE NAZW KOLUMNOWM
            DataTable table = new DataTable("produkt");
            table.Columns.Add("Nazwa", typeof(String));
            table.Columns.Add("Kod", typeof(String));
            table.Columns.Add("Cena", typeof(Double));
            table.Columns.Add("Jednostka", typeof(String));
            table.Columns.Add("Ilosc", typeof(Int32));
            Stream myStream = null;
            OpenFileDialog openFileDialog1 = new OpenFileDialog();

            openFileDialog1.InitialDirectory = "c:\\";
            openFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";
            openFileDialog1.FilterIndex = 2;
            openFileDialog1.RestoreDirectory = true;

            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                try
                {
                    if ((myStream = openFileDialog1.OpenFile()) != null)
                    {
                        using (myStream)
                        {
                            //ODCZYTANIE WYBRANEGO PLIKU
                          StreamReader reader = new StreamReader(myStream);

                            string linia;

                            while ((linia = reader.ReadLine()) != null)
                            {
                                string[] items = linia.Split('\t');
                                //UPEWNIENIE SIE DLUGOSCI TABELI

                                    DataRow row = table.NewRow();
                                    row["Nazwa"] = items[0];
                                    row["Kod"] = Int32.Parse(items[1]);
                                    row["Cena"] = Double.Parse(items[2]);
                                    row["Jednostka"] = items[3];
                                    row["Ilosc"] = Int32.Parse(items[1]);

                                    table.Rows.Add(row);

                            }
                            reader.Close();
                            reader.Dispose();

                        }
                        gridControl1.DataSource = table;

                    }

                }
                catch (Exception ex)
                {
                    MessageBox.Show("Blas");
                }

                gridControl1.DataSource = table;
                //WCZYTANIE TABELI DO GRIDA

                table.Dispose();
            }

        }