How to use a DataGrid or DataGridView in a WPF application

using System;

using System.Collections.Generic;

using System.Text;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Shapes;

using System.Data;

using System.Data.SqlClient;

namespace DataGridinXAMl

{

    /// <summary>

    /// Interaction logic for Window1.xaml

    /// </summary>

    public partial class Window1 : System.Windows.Window

    {

        public Window1()

        {

            InitializeComponent();

            DataTable theTable = new DataTable();                     

            // Setting the connection String

            String connString = @"Data Source=MCN0100; Initial Catalog=DataBaseNew ;Integrated Security=True";

            //Set the query

            String query = @"SELECT ID, FirstName, LastName, Department,City,Country FROM Record";

            // Fill the Set with the data

            using (SqlConnection conn = new SqlConnection(connString))

            {

                //Passing the query and connection String

                SqlDataAdapter da = new SqlDataAdapter(query, conn);

                da.Fill(theTable);

                //Making the object of DataGridView

                System.Windows.Forms.DataGridView grid = this.FindName("gridView") as System.Windows.Forms.DataGridView;

                //Set the source of DataGridView from where the data will come

                grid.DataSource = theTable;

                grid.Refresh();

            }

            // Set the Data Context

            DataContext = theTable;      

        }

    }