private void button2_Click(object sender, EventArgs e) { string suc = null; suc = comp.ActiverCompte(txtcodecompte.Text); if (suc == null) { MessageBox.Show("Activaction non reussie", "Attention", MessageBoxButtons.OK, MessageBoxIcon.Warning); } else { MessageBox.Show("Activaction reussie", "Succès", MessageBoxButtons.OK, MessageBoxIcon.Information); txtcodecompte.Clear(); this.Size = new Size(423, 182); txtcodecompte.Focus(); txtcodecompte.Select(); } }