private void SaveGuestInfo(object sender, EventArgs e) { Guest g = new Guest(); g.id = Convert.ToInt64(GuestID.Text); g.name = Fname.Text; g.address = paddress.Text; g.city = pcity.Text; g.mobile = Convert.ToInt32(pmobile.Text); g.nationality = pnationality.Text; g.email = pemail.Text; if (gender11.SelectedItem.ToString() == "male") { g.Gender = true; } else { g.Gender = false; } f.AddGuest(g); MessageBox.Show("Done"); }