XML SqlBulkCopy in C#

using System;
using System.Data;
using System.Data.SqlClient;
using System.IO;
// End of code to move
//
    private void InsertXmlCustomersUsingSqlBulkCopy()
    {
        // (YOU MUST CHANGE THE CONNECTION STRING TO MATCH YOUR SYSTEM)
        String sDatabaseConnectionString = @"Data Source=SERVERNAME;Initial Catalog=XMLTest;Integrated Security=True";
        //
    

        // (YOU MUST CHANGE THE PATH TO YOUR SYSTEMS DRIVE:\PATH)
        String sXMLFile = @"D:\XMLData\Customers.XML";
        try
        {
            // Instanciate a new Sql Connection.
            using (SqlConnection oConn = new SqlConnection(sDatabaseConnectionString))
            {
                // Open the Connection to the database
                oConn.Open();
                // Instanciate a new DataSet
                using (DataSet dsTemp = new DataSet())
                {
                    //Read the XML file into the DataSet
                    dsTemp.ReadXml(sXMLFile);
                    // Instante a datatable from the DataSet
                    using (DataTable dt = dsTemp.Tables[0])
                    {
                        // Instanciate a new SqlBulkCopy object using the connection
                        using (SqlBulkCopy sb = new SqlBulkCopy(oConn))
                        {
                            // Assign BatchSize
                            sb.BatchSize = 50;
                            // Assign Destination Table Name
                            sb.DestinationTableName = "Customers";
                            // Map fields from DB Field Names to the XML Field Names
                            sb.ColumnMappings.Add("ID", "ID");
                            sb.ColumnMappings.Add("FirstName", "FirstName");
                            sb.ColumnMappings.Add("LastName", "LastName");
                            sb.ColumnMappings.Add("DOB", "DOB");
                            sb.ColumnMappings.Add("Address", "Address");
                            sb.ColumnMappings.Add("City", "City");
                            sb.ColumnMappings.Add("State", "State");
                            sb.ColumnMappings.Add("Zip", "Zip");
                            sb.WriteToServer(dt);
                        }
                    }
                }
            }
        }
        // Catch any SQL errors first
        catch (SqlException ex)
        {
            MessageBox.Show("Sql Error: " + ex.Message);
        }
        // Was not a SQL error, so handle the Exception
        catch (Exception ex)
        {
            MessageBox.Show("Error: " + ex.Message);
        }
    }