Scrivere un file XML con il C#

Ho trovato il modo di scrivere un file XML direttamente da un programma fatto con iln C#.

private void button1_Click(object sender, EventArgs e)
        {
            XmlTextWriter writer = new XmlTextWriter("C:/Users/Antonello/product.xml", System.Text.Encoding.UTF8);
            writer.WriteStartDocument(true);
            writer.Formatting = Formatting.Indented;
            writer.Indentation = 2;
            writer.WriteStartElement("Table");
            createNode("1", "Product 1", "1000", writer);
            createNode("2", "Product 2", "2000", writer);
            createNode("3", "Product 3", "3000", writer);
            createNode("4", "Product 4", "4000", writer);
            writer.WriteEndElement();
            writer.WriteEndDocument();
            writer.Close();
            MessageBox.Show("XML File created ! ");
        }

        private void createNode(string pID, string pName, string pPrice, XmlTextWriter writer)
        {
            writer.WriteStartElement("Product");
            writer.WriteStartElement("Product_id");
            writer.WriteString(pID);
            writer.WriteEndElement();
            writer.WriteStartElement("Product_name");
            writer.WriteString(pName);
            writer.WriteEndElement();
            writer.WriteStartElement("Product_price");
            writer.WriteString(pPrice);
            writer.WriteEndElement();
            writer.WriteEndElement();
        }

Il file può essere creato dovunque.
Resta da studiare la cosa e da elaborare anche un programma per la lettura.