void Save_tier(bool btn) { try { ITiers tiers = new Tiers(); if (id == 0 || textBox1.Text.Equals("") || textBox2.Text.Equals("") || textBox3.Text.Equals("") || textBox4.Text.Equals("") || textBox5.Text.Equals("") || textBox6.Text.Equals("")) { MessageBox.Show("Complete all textbox please", "Error...", MessageBoxButtons.OK, MessageBoxIcon.Error); } else { tiers.Id = Convert.ToInt32(id); tiers.Nom = textBox1.Text.Trim(); tiers.Postnom = textBox2.Text.Trim(); tiers.Prenom = textBox3.Text.Trim(); tiers.Contact = textBox4.Text.Trim(); tiers.Mail = textBox5.Text.Trim(); tiers.Addresse = textBox6.Text.Trim(); if (btn) { tiers.Save(tiers); InitializeComponents(); } else { tiers.Delete(id); InitializeComponents(); } } }catch (Exception ex) { MessageBox.Show("Error " + ex.Message); } }