private void btn_bookList_Click(object sender, EventArgs e) { BookList obj = new BookList(id1, type1); obj.ShowDialog(); }
private void btn_login_Click(object sender, EventArgs e) { if (combo_type.Text == "Admin") { if (text_id.Text != "" && text_pw.Text != "") { try { string connectionString = "datasource=localhost;port=3306;userid=root;password=1234;"; MySqlConnection connection = new MySqlConnection(connectionString); string query = "SELECT password FROM lms.admin_login WHERE id ='" + text_id.Text + "'"; MySqlCommand cmd = new MySqlCommand(query, connection); connection.Open(); MySqlDataReader reader; reader = cmd.ExecuteReader(); if (reader.Read()) { if (text_pw.Text == reader.GetString(0)) { MessageBox.Show("Login Successfull!"); this.Hide(); Admin obj = new Admin(text_id.Text, combo_type.Text); obj.Show(); } else { MessageBox.Show("Wrong Password!!", "", MessageBoxButtons.OK, MessageBoxIcon.Error); } } else { MessageBox.Show("Invalid ID!!", "", MessageBoxButtons.OK, MessageBoxIcon.Error); } connection.Close(); } catch (Exception ex) { Console.WriteLine(ex.Message); } } else { MessageBox.Show("Fields are empty!!", "", MessageBoxButtons.OK, MessageBoxIcon.Error); } } else if (combo_type.Text == "Member") { if (text_id.Text != "" && text_pw.Text != "") { try { string connectionString = "datasource=localhost;port=3306;userid=root;password=1234;"; MySqlConnection connection = new MySqlConnection(connectionString); string query = "SELECT m_password FROM lms.member_login WHERE m_id ='" + text_id.Text + "'"; MySqlCommand cmd = new MySqlCommand(query, connection); connection.Open(); MySqlDataReader reader; reader = cmd.ExecuteReader(); if (reader.Read()) { if (text_pw.Text == reader.GetString(0)) { MessageBox.Show("Login Successfull!"); this.Hide(); Admin obj = new Admin(text_id.Text, combo_type.Text); obj.Show(); } else { MessageBox.Show("Wrong Password!!", "", MessageBoxButtons.OK, MessageBoxIcon.Error); } } else { MessageBox.Show("Invalid ID!!", "", MessageBoxButtons.OK, MessageBoxIcon.Error); } connection.Close(); } catch (Exception ex) { Console.WriteLine(ex.Message); } } else { MessageBox.Show("Fields are empty!!", "", MessageBoxButtons.OK, MessageBoxIcon.Error); } } else if (combo_type.Text == "Guest") { BookList obj = new BookList(text_id.Text, combo_type.Text); obj.ShowDialog(); } }