private void button1_Click(object sender, EventArgs e)
        {
            FormMenu fe = new FormMenu();

            fe.Show();
            this.Hide();
        }
        private void btn1_Click(object sender, EventArgs e)
        {
            String          username         = txt1.Text;
            String          password         = txt2.Text;
            String          connectionString = "server = localhost; database = login; uid = root; pwd ='';";
            MySqlConnection cnn = new MySqlConnection(connectionString);

            try
            {
                cnn.Open();
                MySqlDataAdapter da = new MySqlDataAdapter("SELECT * FROM dat_login WHERE username = '******' && password='******'", cnn);
                DataTable        dt = new DataTable();
                da.Fill(dt);
                if (dt.Rows.Count <= 0)
                {
                    MessageBox.Show("Gagal Login!");
                }
                else
                {
                    FormMenu fr = new FormMenu();
                    fr.Show();
                    this.Hide();
                }
                cnn.Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show("Koneksi Error");
            }
        }