อยากได้ตัวอย่างโค๊ด C# ที่ต่อกับ MySQL ของ XAMPP

String MyConectionstring = "Server=localhost;Database=db2;";
 private void Form2_Load(object sender, EventArgs e)
        {
            MySqlConnection con = new MySqlConnection(MyConectionstring);
            try
            {
                con.Open();
                MessageBox.Show("connected");
            }
            catch
            {
                MessageBox.Show("disconnect");
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            
            String date = dateTimePicker1.Text;
            String re_date = dateTimePicker2.Text;
            String re_p = null;
            String pay=null;
            //recive
            if (radioButton1.Checked)
                re_p = "this place";
            else if (radioButton2.Checked)
                re_p = "Fax";
            else
                re_p = "post";
            //Payment
            if (comboBox1.SelectedIndex == 0)
                pay = "money";
            else if (comboBox1.SelectedIndex == 1)
                pay = "receipt";
            else if (comboBox1.SelectedIndex == 2)
                pay = "transfer";
            else if (comboBox1.SelectedIndex == 3)
                pay = "unpaid";
            
            //command insert
            cmd.CommandText = "insert into Profile values('" + ID.Text.Trim() + "','" + date + "','" + name.Text.Trim() + "','" + adr.Text.Trim() + "','" + tel.Text.Trim() + "','" + fax.Text.Trim() + "','" + mail.Text.Trim() + "','" + obj.Text.Trim() + "','" + num.Text.Trim() + "','" + syn.Text.Trim() + "','" + namet.Text.Trim() + "')";
            //cmd.Connection = con; ตรงนี้ error ครับ
            cmd.ExecuteNonQuery();
            cmd.CommandText = "insert into Data values('" + ID.Text.Trim() + "','" + mo.Text.Trim() + "','" + pro.Text.Trim() + "','" + fat.Text.Trim() + "','" + fiber.Text.Trim() + "','" + fiberh.Text.Trim() + "','" + ash.Text.Trim() + "','" + asha.Text.Trim() + "','" + cal.Text.Trim() + "','" + phos.Text.Trim() + "','" + ndf.Text.Trim() + "','" + adf.Text.Trim() + "','" + adfa.Text.Trim() + "','" + en.Text.Trim() + "','" + sodium.Text.Trim() + "','" + pow.Text.Trim() + "','" + am.Text.Trim() + "','" + tan.Text.Trim() + "','" + uri.Text.Trim() + "','" + me.Text.Trim() + "')";
            //cmd.Connection = con; ตรงนี้ error ครับ
            cmd.ExecuteNonQuery();
            cmd.CommandText = "insert into Re values('" + ID.Text.Trim() + "','" + re_p + "','" + post.Text.Trim() + "','" + re_date + "','" + recieve.Text.Trim() + "','" + sent.Text.Trim() + "','" + pay + "','" + money.Text.Trim() + "')";
            //cmd.Connection = con; ตรงนี้ error ครับ
            cmd.ExecuteNonQuery();
            MessageBox.Show("complete");
            
        }