string Pfad = string.Empty;
            OpenFileDialog openFileDialog1 = new OpenFileDialog();
            openFileDialog1.Filter = "txt files (*.txt)|*.txt|All files(*.*)|*.*";
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                Pfad = openFileDialog1.FileName;
            }

            int index = 0;
            daten = new String[spalten.Length];
            foreach (string item in spalten)
            {
                for (int i = 0; i < spalten.Length; i++)
                {
                    daten[i] = item;
                }
            }

            if (!(tB_Name.Text == string.Empty || tB_Passwort.Text == string.Empty || tB_Login.Text == string.Empty))
            {
                daten = new String[spalten.Length + 4];
                foreach (string item in spalten)
                {
                    for (int i = 0; i < spalten.Length; i++)
                    {
                        daten[i] = item;
                    }
                }

                // ARRAY NEU ANLEGEN UND UM 3 ERWEITERN DANN WIRD EIN NEUER DATENSATZ HINZUGEFÜGT
                daten[spalten.Length + 1] = tB_Name.Text;
                daten[spalten.Length + 2] = tB_Login.Text;
                daten[spalten.Length + 3] = tB_Passwort.Text;
            }

            System.IO.File.WriteAllText(Pfad, string.Empty);
            for (int i = 0; i < daten.Length / 3; i++)
            {
                using (System.IO.StreamWriter file = new System.IO.StreamWriter(Pfad, true))
                {
                    file.WriteLine(daten[index] + "," + daten[index + 1] + "," + daten[index + 2]);
                }
                index++;
            }