private void stockToolStripMenuItem_Click(object sender, EventArgs e) { this.Hide(); stock2 to = new stock2(); to.Show(); }
private void button1_Click(object sender, EventArgs e) //ปุ่มlogin { MySqlConnection conn = databaseConnection(); conn.Open(); MySqlCommand cmd; cmd = conn.CreateCommand(); cmd.CommandText = $"SELECT * FROM user WHERE username = \"{textBox1.Text}\" AND password = \"{textBox2.Text}\""; MySqlDataReader row = cmd.ExecuteReader(); if (row.HasRows) { MessageBox.Show("เข้าสู่ระบบสำเร็จ"); //กรอกข้อมูลถูกต้อง Program.username = textBox1.Text; MySqlConnection con2 = databaseConnection(); con2.Open(); MySqlCommand cmd2 = con2.CreateCommand(); cmd2.CommandText = $"SELECT status FROM user WHERE username = \"{textBox1.Text}\""; MySqlDataReader dr = cmd2.ExecuteReader(); if (dr.Read()) { string status = dr.GetValue(0).ToString(); if (status == "admin") { stock2 a = new stock2(); this.Hide(); a.Show(); } else { Order3 a = new Order3(); this.Hide(); a.Show(); } } else { MessageBox.Show("ชื่อผู้ใช้ หรือ รหัสผ่านไม่ถูกต้อง"); //กรอกข้อมูลไม่ถูกต้อง } conn.Close(); } }