How to insert data from XML to database

using System;
using System.Data;
using System.Windows.Forms;
using System.Xml;
using System.Data.SqlClient; 

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string connetionString = null;
            SqlConnection connection;
            SqlCommand command ;
            SqlDataAdapter adpter = new SqlDataAdapter();
            DataSet ds = new DataSet();
            XmlReader xmlFile ;
            string sql = null;

            int product_ID = 0;
            string Product_Name = null;
            double product_Price = 0;

            connetionString = "Data Source=servername;Initial Catalog=databsename;User ID=username;Password=password";

            connection = new SqlConnection(connetionString);

            xmlFile = XmlReader.Create("Product.xml", new XmlReaderSettings());
            ds.ReadXml(xmlFile);
            int i = 0;
            connection.Open();
            for (i = 0; i <= ds.Tables[0].Rows.Count - 1; i++)
            {
                product_ID = Convert.ToInt32(ds.Tables[0].Rows[i].ItemArray[0]);
                Product_Name = ds.Tables[0].Rows[i].ItemArray[1].ToString();
                product_Price = Convert.ToDouble(ds.Tables[0].Rows[i].ItemArray[2]);
                sql = "insert into Product values(" + product_ID + ",'" + Product_Name + "'," + product_Price + ")";
                command = new SqlCommand(sql, connection);
                adpter.InsertCommand = command;
                adpter.InsertCommand.ExecuteNonQuery();
            }
            connection.Close();
            MessageBox.Show("Done .. ");
        }
    }
}