Form1.username = textBox2.Text;
                Hotel.Properties.Settings.Default.DBUsername = textBox2.Text;

                Form1.password = textBox3.Text;
                Hotel.Properties.Settings.Default.DBPassword = textBox3.Text;

                Form1.string_polaczenia = textBox1.Text;
                Hotel.Properties.Settings.Default.DBString = textBox1.Text;

                Hotel.Properties.Settings.Default.Save();
                 Komunikat okno_komunikat = new Komunikat("Zapisano",
                this.Location.Y, this.Location.X, this.Height,  this.Width);
                okno_komunikat.Show();