private void Add_User_button_Click(object sender, EventArgs e) { try { Oracle.CreateUser(MainForm.Login_Form.conn, UserName_textBox.Text, Password_textBox.Text); MessageBox.Show("ĐA TAO USER " + UserName_textBox.Text + " THANH CONG!!", "Succeed", MessageBoxButtons.OK, MessageBoxIcon.Information); MainForm.GetUsers(); this.Close(); } catch (Exception ex) { MessageBox.Show("ERROR:" + ex.Message, "Fail", MessageBoxButtons.OK, MessageBoxIcon.Error); } }